| 释义 |
haloalkaneenUK
Thesaurus| Noun | 1. | haloalkane - organic compound in which halogen atoms have been substituted for hydrogen atoms in an alkanealkyl halidehaloform - compounds with the formula CHX3, where X is a halogen atomorganic compound - any compound of carbon and another element or a radical |
haloalkaneenUK
haloalkane[¦ha·lō¦al‚kān] (organic chemistry) Halogenated aliphatic hydrocarbon. halo
halo [ha´lo] a circular structure, such as a luminous circle seen surrounding an object or light.Fick's halo a colored circle appearing around a light, experienced by wearers of contact lenses.halo glaucomato´sus (glaucomatous halo) a narrow light zone surrounding the optic disk in glaucoma.senile halo a zone of variable width around the optic disk, due to exposure of various elements of the choroid as a result of senile atrophy of the pigmented epithelium.ha·lo (hā'lō), 1. A reddish yellow ring surrounding the optic disc, due to a widening of the scleral ring making the deeper structures visible. 2. An anular flare of light surrounding a luminous body or a depigmented ring around a mole. 3. Synonym(s): areola (4) 4. A circular metal band used in a halo cast or halo brace, attached to the skull with pins. [G. halōs, threshing floor on which oxen trod a circle; the halo round the sun or moon] ha·lo (hā'lō) 1. A reddish yellow ring surrounding the optic disc, due to a widening of the scleral ring making the deeper structures visible. 2. An anular flare of light surrounding a luminous body or a depigmented ring around a mole.
See: halo nevus3. Synonym(s): areola (4) . 4. A circular metal band used in a halo cast or halo brace, attached to the skull with pins. [G. halōs, threshing floor on which oxen trod a circle; the halo round the sun or moon]haloA coloured ring of light seen around a light source as a result of aberrations, internal reflections, diffraction or scattering. It also appears when the eye is diseased and the cornea is oedematous, as in glaucoma.haloalkaneenUK
Synonyms for haloalkanenoun organic compound in which halogen atoms have been substituted for hydrogen atoms in an alkaneSynonymsRelated Words |