| hermaphrodite | <biology> An organism which has both male and female organs, and produces both male gametes (sperm) and female gametes (eggs). The organism can have both types of organs at the same time (simultaneous hermaphrodite) or have one type early in life and the other type later in life (sequential hermaphrodite). (09 Oct 1997) |
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| sequential hermaphrodite | <biology, zoology> A type of hermaphrodite which starts out life as one sex and will either turn into a member of the other sex at a later point in life or will be capable of doing so if an appropriate condition arises (for example: the removal of all of the males in a population triggers the most dominant female to become a male). (11 Jun 1998) |
| simultaneous hermaphrodite | A type of hermaphrodite which has both male and female organs at the same time and is able to produce both sperm and eggs at the same time. Such an organism is also able to fertilize its eggs with its own sperm (self-fertilization). (09 Oct 1997) |
| true aneurysm | Localised dilation of an artery with an expanded lumen lined by stretched remnants of the arterial wall. (05 Mar 2000) |
| true ankylosis | Same as Synosteosis. Source: Websters Dictionary (01 Mar 1998) |
| true cementoma | <tumour> A benign odontogenic tumour of functional cementoblasts; it appears as a mixed radiolucent-radiopaque lesion attached to a tooth root and may cause expansion of the bone cortex or be associated with pain. Synonym: benign cementoblastoma, true cementoma. (05 Mar 2000) |
| true cholinesterase | <enzyme, neurology, physiology> An enzyme that breaks down unused acetylcholine in the synaptic cleft (the space between neurons), this enzyme is necessary to restore the synaptic cleft so it is ready to transmit the next nerve impulse. (06 May 1997) |
| true conjugate | Distance from the promontory of the sacrum to the upper posterior edge of the pubic symphysis. Synonym: anteroposterior diameter of the pelvic inlet, conjugata vera, conjugate axis, conjugate diameter of pelvic inlet, diameter mediana, internal conjugate, true conjugate. (05 Mar 2000) |
| true diverticulum | A term denoting a diverticulum that includes all the layers of the wall from which it protrudes. (05 Mar 2000) |
| true dwarfism | Dwarfism characterised by normal development that is at a strikingly lesser rate than that for members of the same family, race, or other races. Synonym: primordial dwarfism, true dwarfism. (05 Mar 2000) |
| true glottis | The interval between the true vocal cords. Synonym: glottis vera, rima vocalis, true glottis. (05 Mar 2000) |
| true-hearted | Of a faithful heart; honest; sincere; not faithless or deceitful; as, a truhearted friend. True"-heartedness. Source: Websters Dictionary (01 Mar 1998) |
| true hermaphroditism | Hermaphroditism in which both ovarian and testicular tissue are present. Somatic characteristics of both sexes are present; also called true intersex. (05 Mar 2000) |
| true hypertrophy | An increase in size involving all the different tissues composing the part. (05 Mar 2000) |
| true knot | True knot of umbilical cord, actual intertwining of a segment of umbilical cord; circulation is usually not obstructed. (05 Mar 2000) |