| Ad | adenovirus; adrenal; anisotropic disk |
|---|---|
| CD | cadaver donor; canine distemper; canine dose; carbohydrate dehydratase; carbon dioxide; cardiac dise... |
| CDR | calcium-dependent regulator; clinical dementia rating; complementary determining region; computerize... |
| CD-ROM | compact disk-read only memory |
| DOS | day of surgery; deoxystreptamine; disk operating system; Doctor of Ocular Science; Doctor of Optical... |
| tactile cell | One of the epithelioid cell's of a corpusculum tactus. Synonym: touch cell. (05 Mar 2000) |
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| tactile corpuscle | One of numerous oval bodies found in the papillae of the skin, especially those of the fingers and toes; they consist of a connective tissue capsule in which the axon fibrils terminate around and between a pile of wedge-shaped epithelioid cells. Synonym: corpusculum tactus, Meissner's corpuscle, oval corpuscle, touch corpuscle. (05 Mar 2000) |
| tactile elevations | Small areas in the skin of the palms and soles especially rich in sensory nerve endings. Synonym: toruli tactiles. (05 Mar 2000) |
| tactile fremitus | Vibration felt with the hand on the chest during vocal fremitus. (05 Mar 2000) |
| tactile hair | The vibrissae or whiskers of animals such as rats and cats which have especially well developed touch endings in the follicular wall. (05 Mar 2000) |
| tactile hallucination | False perception of movement or sensation, as from an amputated limb, or crawling sensation on the skin. (05 Mar 2000) |
| tactile hyperesthesia | Extreme sensitiveness to touch. Synonym: oxyaphia, tactile hyperesthesia. Origin: hyper-+ G. Haphe, touch (05 Mar 2000) |
| tactile image | An image of an object as perceived by the sense of touch. (05 Mar 2000) |
| tactile meniscus | A specialised tactile sensory nerve ending in the epidermis, characterised by a terminal cuplike expansion of an intraepidermal axon in contact with the base of a single modified keratinocyte. Synonym: meniscus tactus, Merkel's corpuscle, Merkel's tactile cell, Merkel's tactile disk, tactile disk. (05 Mar 2000) |
| tactile organ | Any one of the sensory end organs. Synonym: organum tactus, tactile organ. (05 Mar 2000) |
| tactile sense | 1. To come in contact with; to hit or strike lightly against; to extend the hand, foot, or the like, so as to reach or rest on. "Him thus intent Ithuriel with his spear Touched lightly." (Milton) 2. To perceive by the sense of feeling. "Nothing but body can be touched or touch." (Greech) 3. To come to; to reach; to attain to. "The god, vindictive, doomed them never more- Ah, men unblessed! to touch their natal shore." (Pope) 4. To try; to prove, as with a touchstone. "Wherein I mean to touch your love indeed." (Shak) 5. To relate to; to concern; to affect. "The quarrel toucheth none but us alone." (Shak) 6. To handle, speak of, or deal with; to treat of. "Storial thing that toucheth gentilesse." (Chaucer) 7. To meddle or interfere with; as, I have not touched the books. 8. To affect the senses or the sensibility of; to move; to melt; to soften. "What of sweet before Hath touched my sense, flat seems to this and harsh." (Milton) "The tender sire was touched with what he said." (Addison) 9. To mark or delineate with touches; to add a slight stroke to with the pencil or brush. "The lines, though touched but faintly, are drawn right." (Pope) 10. To infect; to affect slightly. 11. To make an impression on; to have effect upon. "Its face . . . So hard that a file will not touch it." (Moxon) 12. To strike; to manipulate; to play on; as, to touch an instrument of music. "[They] touched their golden harps." (Milton) 13. To perform, as a tune; to play. "A person is the royal retinue touched a light and lively air on the flageolet." (Sir W. Scott) 14. To influence by impulse; to impel forcibly. " No decree of mine, . . . [to] touch with lightest moment of impulse his free will," 15. To harm, afflict, or distress. "Let us make a covenant with thee, that thou wilt do us no hurt, as we have not touched thee." (Gen. Xxvi. 28, 29) 16. To affect with insanity, especially in a slight degree; to make partially insane; rarely used except in the past participle. "She feared his head was a little touched." (Ld. Lytton) 17. <geometry> To be tangent to. See Tangent. 18. To lay a hand upon for curing disease. To touch a sail, to keep the ship as near the wind as possible. To touch up, to repair; to improve by touches or emendation. Origin: F. Toucher, OF. Touchier, tuchier; of Teutonic origin; cf. OHG. Zucchen, zukken, to twitch, pluck, draw, G. Zukken, zukken, v. Intens. Fr. OHG. Ziohan to draw, G. Ziehen, akin to E. Tug. See Tuck, Tug, and cf. Tocsin, Toccata. 1. The act of touching, or the state of being touched; contact. "Their touch affrights me as a serpent's sting." (Shak) 2. <physiology> The sense by which pressure or traction exerted on the skin is recognised; the sense by which the properties of bodies are determined by contact; the tactile sense. See Tactile sense, under Tactile. "The spider's touch, how exquisitely fine." (Pope) Pure tactile feelings are necessarily rare, since temperature sensations and muscular sensations are more or less combined with them. The organs of touch are found chiefly in the epidermis of the skin and certain underlying nervous structures. 3. Act or power of exciting emotion. "Not alone The death of Fulvia, with more urgent touches, Do strongly speak to us." (Shak) 4. An emotion or affection. "A true, natural, and a sensible touch of mercy." (Hooker) 5. Personal reference or application. "Speech of touch toward others should be sparingly used." (Bacon) 6. A stroke; as, a touch of raillery; a satiric touch; hence, animadversion; censure; reproof. "I never bare any touch of conscience with greater regret." (Eikon Basilike) 7. A single stroke on a drawing or a picture. "Never give the least touch with your pencil till you have well examined your design." (Dryden) 8. Feature; lineament; trait. "Of many faces, eyes, and hearts, To have the touches dearest prized." (Shak) 9. The act of the hand on a musical instrument; bence, in the plural, musical notes. "Soft stillness and the night Become the touches of sweet harmony." (Shak) 10. A small quantity intermixed; a little; a dash. "Eyes La touch of Sir Peter Lely in them." (Hazlitt) "Madam, I have a touch of your condition." (Shak) 11. A hint; a suggestion; slight notice. "A small touch will put him in mind of them." (Bacon) 12. A slight and brief essay. "Print my preface in such form as, in the booksellers' phrase, will make a sixpenny touch." (Swift) 13. A touchstone; hence, stone of the sort used for touchstone. " Now do I play the touch." "A neat new monument of touch and alabaster." (Fuller) 14. Hence, examination or trial by some decisive standard; test; proof; tried quality. "Equity, the true touch of all laws." (Carew) "Friends of noble touch ." (Shak) 15. The particular or characteristic mode of action, or the resistance of the keys of an instrument to the fingers; as, a heavy touch, or a light touch, also, the manner of touching, striking, or pressing the keys of a piano; as, a legato touch; a staccato touch. 16. The broadest part of a plank worked top and but (see Top and but, under Top,), or of one worked anchor-stock fashion (that is, tapered from the middle to both ends); also, the angles of the stern timbers at the counters. 17. That part of the field which is beyond the line of flags on either side. 18. A boys' game; tag. In touch, outside of bounds. To be in touch, to be in contact, or in sympathy. To keep touch. To be true or punctual to a promise or engagement; hence, to fulfill duly a function. "My mind and senses keep touch and time." (Sir W. Scott) To keep in contact; to maintain connection or sympathy;-with with or of. Touch and go, a phrase descriptive of a narrow escape. True as touch (i.e, touchstone), quite true. Origin: Cf. F. Touche. See Touch. Source: Websters Dictionary (01 Mar 1998) |
| acromioclavicular disk | The articular disk of fibrocartilage usually found between the acromial end of the clavicle and the medial border of the acromion. Synonym: discus articularis acromioclavicularis, acromioclavicular disk, Weitbrecht's cartilage. (05 Mar 2000) |
| Airy disk | <microscopy> The image of a bright point object as focused by a lens system. With monochromatic light, it consists of a central point of maximum intensity surrounded by alternate circles of light and darkness caused by the reinforcement and interference of diffracted rays. The light areas are called maxima and the dark areas minima. The distribution of light from the centre to the outer areas of the figure was investigated mathematically by Sir George Airy. The diffraction disk forms a basis for determining the resolving power of an ideal lens system. The diameter of the disk depends largely on the aperture of the lens. The diffraction of light causing the Airy disk is a factor limiting the resolution of a well corrected optical system. The bright disk of light (surrounded by alternating dark and bright diffraction rings)that is formed by a perfect diffraction-limited lens, focusing an image of an infinitely small source of light. For a minute absorbing spot, the diffraction pattern is a dark Airy disk surrounded by brighter and darker diffraction rings. Since the Airy disk is the smallest unit that makes up the image of a luminous or absorbing object (formed by a properly corrected microscope lens in focus), the radius of the disk determines the limit of resolution of the microscope. (05 Aug 1998) |
| articular disk | A plate or ring of fibrocartilage attached to the joint capsule and separating the articular surfaces of the bones for a varying distance, sometimes completely; it serves to adapt two articular surfaces that are not entirely congruent. Synonym: discus articularis, articular disk, fibrocartilago interarticularis, fibroplate, interarticular fibrocartilage, intra-articular cartilage. (05 Mar 2000) |
| blastodermic disk | The aggregation of blastomeres of a telolecithal ovum after cleavage has occurred. (05 Mar 2000) |