| tray | Origin: OE. Treye, AS. Treg. Cf. Trough. 1. A small trough or wooden vessel, sometimes scooped out of a block of wood, for various domestic uses, as in making bread, chopping meat, etc. 2. A flat, broad vessel on which dishes, glasses, etc, are carried; a waiter; a salver. 3. A shallow box, generally without a top, often used within a chest, trunk, box, etc, as a removable receptacle for small or light articles. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| melanophore-expanding principle | A polypeptide hormone secreted by the intermediate lobe of the hypophysis in humans (in neurohypophysis in certain other species) which causes dispersion of melanin by melanophores, resulting in darkening of the skin, presumably by promoting melanin synthesis; this effect is readily demonstated in some lower vertebrates, such as frogs and fish; alpha-melanotropin is an N-acetylated peptide with 13 amino acids; beta-melanotropin has 22 amino acids. Synonym: intermedin, melanocyte-stimulating hormone, melanophore-expanding principle. (05 Mar 2000) |
| expanding | That expands, or may be expanded; extending; spreading; enlarging. Expanding bit, Expanding drill, a pulley so made, as in sections, that its diameter can be increased or diminished. Source: Websters Dictionary (01 Mar 1998) |
| Blumer's shelf | A shelf palpable by rectal examination, due to metastatic tumour cells gravitating from an abdominal cancer and growing in the rectovesical or rectouterine pouch. Synonym: Blumer's shelf. (05 Mar 2000) |
| palatal shelf | A medially directed outgrowth of the embryonic maxilla; when fused with its opposite number it forms the secondary palate. (05 Mar 2000) |
| rectal shelf | A shelf palpable by rectal examination, due to metastatic tumour cells gravitating from an abdominal cancer and growing in the rectovesical or rectouterine pouch. Synonym: Blumer's shelf. (05 Mar 2000) |
| vocal shelf | One of Ferrein's cords; the sharp edge of a fold of mucous membrane overlying the vocal ligament and stretching along either wall of the larynx from the angle between the laminae of the thyroid cartilage to the vocal process of the arytenoid cartilage; the vocal folds are the agents concerned in voice production. Synonym: plica vocalis, chorda vocalis, labium vocale, true vocal cord, vocal cord, vocal shelf. (05 Mar 2000) |
| shelf | Origin: OE. Shelfe, schelfe, AS. Scylfe; akin to G. Schelfe, Icel. Skjalf. In senses 2 & 3, perhaps a different word (cf. Shelve,). 1. A flat tablet or ledge of any material set horizontally at a distance from the floor, to hold objects of use or ornament. 2. A sand bank in the sea, or a rock, or ledge of rocks, rendering the water shallow, and dangerous to ships. "On the tawny sands and shelves." (Milton) "On the secret shelves with fury cast." (Dryden) 3. <chemical> A stratum lying in a very even manner; a flat, projecting layer of rock. 4. A piece of timber running the whole length of a vessel inside the timberheads. To lay on the shelf, to lay aside as unnecessary or useless; to dismiss; to discard. Source: Websters Dictionary (01 Mar 1998) |
| shelf procedure | Insertion of a graft from the ilium into the roof of the acetabulum for congenital dislocation of the hip. (05 Mar 2000) |
| dental shelf | dental ledge |