| tertiary amyl alcohol | amylene hydrate |
|---|---|
| tertiary butyl alcohol | Trimethylcarbinol, 2-methyl-2-propanol, (CH3)3COH, a denaturant for ethanol. (05 Mar 2000) |
| tertiary calcium phosphate | Ca3(PO4)2;used as an antacid. Synonym: bone ash, bone phosphate, tertiary calcium phosphate, tricalcium phosphate, whitlockite. (05 Mar 2000) |
| tertiary cortex | <anatomy> Mid cortical region of lymph node, area that is particularly depleted of T lymphocytes in thymectomised animals and is referred to as the thymus dependent area. (18 Nov 1997) |
| tertiary dentin | Morphologically irregular dentin formed in response to an irritant. Synonym: irregular dentin, irritation dentin, reparative dentin. (05 Mar 2000) |
| tertiary egg membrane | See: egg membrane. (05 Mar 2000) |
| tertiary medical care | Specialised consultative care, usually on referral from primary or secondary medical care personnel, by specialists working in a centre that has personnel and facilities for special investigation and treatment. (05 Mar 2000) |
| tertiary oesophageal contractions | <radiology> Disordered up-and-down movement of bolus, 5-10% of normal adults in 4-6th decade, location: distal 2/3 of oesophagus aetiology: presbyesophagus, diffuse oesophageal spasm, hyperactive achalasia, neuromuscular disease: diabetes, Parkinsonism, ALS, MS, thyrotoxic myopathy, myotonic dystrophy, obstruction of cardia: neoplasm, distal oesophageal stricture, benign lesion, surgery (repair of HH) findings: spontaneous repetitive nonpropulsive contraction (yo-yo motion), corkscrew appearance, compartmentalization of barium (rosary bead, shish kebab) (12 Dec 1998) |
| tertiary structure | <biochemistry, chemistry> The third level of structural organisation in a macromolecule. The primary structure of a protein (for example) is the amino acid sequence, the secondary structure is the folding of the peptide chain (alpha helical or beta pleated), the tertiary structure is the way in which the helices or sheets are folded or arranged to give the three dimensional structure of the protein. Quaternary structure refers to the arrangement of protomers in a multimeric protein. (13 Jan 1998) |
| tertiary syphilid | A syphilitic skin lesion characteristic of the third stage of the disease. (05 Mar 2000) |
| tertiary syphilis | <microbiology> An advanced (stage III) syphilitic infection (Treponema pallidum) affecting nervous structures. Symptoms include ataxia, dementia and tabes dorsalis (staggering gait and postural difficulties). (13 Jan 1998) |
| tertiary villus | The definitive chorionic villus with a vascular core separated from maternal blood by connective tissue, cytotrophoblast, and syncytiotrophoblast. (05 Mar 2000) |
| tertiary vitreous | Vitreous fibrils derived from the neuroepithelium of the ciliary body and forming the ciliary zonule. (05 Mar 2000) |
| Graafian follicle | <gynaecology> Final stage in the differentiation of follicles in the mammalian ovary. Consists of a spherical fluid filled blister on the surface of the ovary that bursts at ovulation to release the oocyte. (18 Nov 1997) |
| hair follicle | <dermatology> A tube-like opening in the epidermis where the hair shaft develops and into which the sebaceous glands open (13 Nov 1997) |