| RI | radiation intensity; radioactive isotope; radioimmunology; recession index; recombinant inbred [stra... |
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| SI | International System of Units [Fr. le Systeme International d'Unites]; sacroiliac; saline infusion; ... |
| LUL | left upper eyelid; left upper limb; left upper lobe; left upper lung |
| RUL | right upper eyelid; right upper lateral; right upper limb; right upper lobe |
| AI | accidental injury; accidentally incurred; adiposity index; aggregation index; allergy and immunology... |
| face-bow fork | <dentistry> That part of the face-bow assemblage used to attach the maxillary trial base to the face-bow proper. Synonym: bite fork. (05 Mar 2000) |
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| face-bow record | <dentistry> A registration utilizing a face-bow of the position of the hinge axis and/or the condyles; the face-bow record is used to orient the maxillary cast to the opening and closing axis of the articulator. (05 Mar 2000) |
| face form | The outline form of the face, the outline form of the face from an anterior view. (05 Mar 2000) |
| face peel | <procedure> Removal of skin blemishes such as wrinkles, freckles, or acne scars by chemical agents producing injury (trichloracetic, phenol, or other organic acids) or solid carbon dioxide. (05 Mar 2000) |
| face validity | The extent to which the items of a test or procedure appear superficially to sample that which is to be measured. (05 Mar 2000) |
| kinematic face-bow | adjustable axis face-bow |
| foetal face syndrome | <syndrome> A syndrome of facies resembling an early foetus with short forearms, and genital hypoplasia at birth, but without evidence of achondroplasia; leads to dwarfism without mental retardation. Synonym: Robinow's syndrome. (05 Mar 2000) |
| forming face | The side of the Golgi apparatus which faces the rough endoplasmic reticulum, where vesicles budding off of the rough endoplasmic reticulum fuse to the Golgi apparatus. Also called the cis side of the Golgi apparatus. (09 Oct 1997) |
| frog face | The appearance caused by broadening of the nose which occurs in certain cases of nasal polyps. (05 Mar 2000) |
| arterial arch of upper eyelid | Formed by communicating branches of the medial and lateral palpebral arteries. Often two arches are present, one located near the free border of the tarsal plate, the other along the upper border of the tarsus. Synonym: arcus palpebralis superior. (05 Mar 2000) |
| bones of upper extremity | The bones of the upper and lower arm. They include the clavicle and scapula. (12 Dec 1998) |
| bones of upper limb | These include the superior limb girdle (scapula and clavicle) and the skeleton of the free superior limb (humerus, radius, ulna, wrist bones, metacarpus, and bones of the fingers). Synonym: ossa membri superioris, bones of superior limb. (05 Mar 2000) |
| regions of upper limb | The topographic divisions of the upper limb: deltoid, arm, elbow, forearm, carpal region, and hand. Synonym: regiones membri superioris, regions of superior limb. (05 Mar 2000) |
| denture, complete, upper | A complete denture replacing all the natural maxillary teeth and associated maxillary structures. It is completely supported by the oral tissue and underlying maxillary bone. (12 Dec 1998) |
| quadrate muscle of upper lip | Composed of three heads usually described as three separate muscles; they are the caput angulare or levator labii superioris alaeque nasi muscle; caput infraorbitale or levator labii superioris muscle; caput zygomaticum or zygomaticus minor muscle. Synonym: quadrate muscle of upper lip. (05 Mar 2000) |