See Also: ecto-(medicine)
ecto-(dictionary)

ecto- (iou)



ecto- combining form.
[Repr. Greek ekto- stem of ektos adverb: see -O-.]
Outside, external.
ectocrine noun (Biology) any metabolite that is released into an organism's environment and influences the vital processes of other organisms M20.
ectoloph noun (Zoology) the outer ridge on the crown of a lophodont tooth E20.
ecto'parasite noun a parasite that inhabits the outer surface of the body (as skin, fur, feathers, etc.) of its host M19.
ecto'pterygoid adjective & noun (Zoology) (designating or pertaining to) a palatal bone of most reptiles and some amphibians, lateral to the pterygoid L19.
ecto'thermic adjective (Zoology) dependent on external sources of body heat (cf. POIKILOTHERMIC): M20.
ectotrophic adjective (Botany) (of a mycorrhiza) forming tissue on the surface of roots L19.