User Contributed Dictionary
Adjective
Translations
- Italian: epigeo (1,2)
Extensive Definition
Epigeal, epigean, epigeic and epigeous are
biological terms
describing an organism's activity above the
soil surface.
In botany, a seed is described as epigeal when
the cotyledons of the
germinating seed
expand, throw off the seed shell and become photosynthetic above the
ground. The opposite kind, where the cotyledons remain
non-photosynthetic, inside the seed shell, and below ground, is
hypogeal.
An organism is epigean, epigeic or epigeous if it
crawls (epigean), creeps like a vine (epigeal), or grows (epigeous)
on the soil surface, or more generally in animals, neither burrows nor
swims nor flies. Consequently, the opposite term depends on the
circumstances. It can be fossorial (burrowing), troglobitic - or
stygobitic,
hypogean etc. - (for cave-living organisms), or hypogeic and hypogeous
(for plants and fungi that grow underground).
See also
epigeal in French: Épigé