| disco- | Disc- A disk; disk-shaped. Origin: G. Diskos (05 Mar 2000) |
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| discoblastic | <biology> Applied to a form of egg cleavage seen in osseous fishes, which occurs only in a small disk that separates from the rest of the egg. Origin: Gr. Disk + to grow. Source: Websters Dictionary (01 Mar 1998) |
| discoblastula | A blastula of the type produced by the meroblastic discoidal cleavage of a large-yolked ovum. (05 Mar 2000) |
| discodactyl | <zoology> One of the tree frogs. See: Discodactylia. Source: Websters Dictionary (01 Mar 1998) |
| discodactylia | <zoology> A division of amphibians having suctorial disks on the toes, as the tree frogs. Origin: NL, fr. Gr. Disk + finger. Source: Websters Dictionary (01 Mar 1998) |
| discodactylous | <zoology> Having sucking disks on the toes, as the tree frogs. Source: Websters Dictionary (01 Mar 1998) |
| discogastrula | A gastrula of the type formed after the discoidal cleavage of a large-yolked ovum. (05 Mar 2000) |
| discogenic | Denoting a disorder originating in or from an intervertebral disk. Origin: disco-+ G. Genesis, origin (05 Mar 2000) |
| discoid | Shaped like a disk. Origin: Gr. Diskos = disk (18 Nov 1997) |
| discoid lupus erythematosus | A form of lupus erythematosus in which cutaneous lesions are present; these commonly appear on the face and are atrophic plaques with erythema, hyperkeratosis, follicular plugging, and telangiectasia; in some instances systemic lupus erythematosis may develop. Synonym: chronic discoid lupus erythematosus. (05 Mar 2000) |
| discoidal cleavage | Meroblastic cleavage limited to the small cap (animal pole) of protoplasm of large-yolked eggs, such as the telolecithal eggs of birds. (05 Mar 2000) |
| discoidin | <protein> A lectin, isolated from the cellular slime mould Dictyostelium discoideum, that has a binding site for carbohydrate residues related to galactose. The lectin, that consists of two distinct species (discoidins I and II), is synthesised as the cells differentiate from vegetative to aggregation phase and was originally thought to be involved in intercellular adhesion, but discoidin I is now thought to be involved in adhesion to the substratum by a mechanism resembling that of fibronectin in animals. (18 Nov 1997) |
| discolith | <biology> One of a species of coccoliths, having an oval discoidal body, with a thick strongly refracting rim, and a thinner central portion. One of them measures about 1/50000 of an inch in its longest diameter. Origin: Gr. A round plate. Source: Websters Dictionary (01 Mar 1998) |
| discolourous | Of different colours, of leaves, having the two surfaces different in colour. (09 Oct 1997) |
| discomfort | 1. Discouragement. 2. Want of comfort; uneasiness, mental or physical; disturbance of peace; inquietude; pain; distress; sorrow. "An age of spiritual discomfort." "Strive against all the discomforts of thy sufferings." (Bp. Hall) Origin: OF. Desconfort, F. Deconfort. See Discomfort. Source: Websters Dictionary (01 Mar 1998) |