| helicoid | Coiled, of a cymose inflorescence, branching repeatedly on the same side. (09 Oct 1997) |
|---|---|
| helicoid choroidopathy | Bilateral acquired abnormality of retinal pigment epithelium and choroid in which irregular multiple progressive swelling is followed by atrophic scars in linear patterns. Synonym: helicoid choroidopathy, serpiginous choroidopathy. (05 Mar 2000) |
| helicoid ginglymus | A synovial joint in which a section of a cylinder of one bone fits into a corresponding cavity on the other, as in the proximal radioulnar joint. Synonym: articulatio trochoidea, helicoid ginglymus, lateral ginglymus, rotary joint, rotatory joint, trochoid articulation, trochoid joint. (05 Mar 2000) |
| helicoidal cell wall | Type of plant cell wall in which each wall layer contains parallel microfibrils, but in which the orientation of the microfibrils changes by a fixed angle from one layer to the next. Gives a characteristic herringbone pattern in transmission electron microscopy. A similar architecture of fibrillar material is seen in some insect exoskeletons. (18 Nov 1997) |
| heliconia | <zoology> One of numerous species of Heliconius, a genus of tropical American butterflies. The wings are usually black, marked with green, crimson, and white. Origin: NL. See Helicon. Source: Websters Dictionary (01 Mar 1998) |
| heliconian | 1. Of or pertaining to Helicon. "Heliconian honey." 2. <zoology> Like or pertaining to the butterflies of the genus Heliconius. Origin: L. Heliconius. Source: Websters Dictionary (01 Mar 1998) |
| helicopod gait | A gait, seen in some conversion reactions or hysterical disorders, in which the feet describe half circles. Synonym: helicopodia. (05 Mar 2000) |
| helicopodia | Synonym: helicopod gait. Origin: G. Helix, a coil, + pous, foot (05 Mar 2000) |
| helicotrema | <anatomy> The opening by which the two scalae communicate at the top of the cochlea of the ear. Origin: NL, fr. Gr, a helix + a hole. Source: Websters Dictionary (01 Mar 1998) |