| ectosymbiont | An organism which is participating in ectosymbiosis (a form of symbiosis in which the organisms involved are physically separated). (09 Oct 1997) |
|---|---|
| ectosymbiosis | Symbiosis between two organisms which are physically separated from each other. Compare: endosymbiosis. (09 Oct 1997) |
| ectotherm | An organism that does not generate its own body heat and must use an external source of heat to warm itself. A cold-blooded organism. (09 Oct 1997) |
| ectothermic | Able to maintain a constant body temperature with an external heat source. (09 Oct 1997) |
| ectothrix | A sheath of spores (conidia) on the outside of a hair. Origin: ecto-+ G. Thrix, hair (05 Mar 2000) |
| ectotoxin | <protein> Toxin released from gram-positive and gram-negative bacteria as opposed to endotoxins that form part of the cell wall. Examples are cholera, pertussis and diphtheria toxins. Usually specific and highly toxic. (18 Nov 1997) |
| ectotrophic | Describes an organism that gets its nutrients from the outside surface of its host. (09 Oct 1997) |
| ectotrophoblastic cavity | A developmental cavity appearing between the trophoblast and the embryonic disk ectoderm in some mammals. (05 Mar 2000) |
| ectozoic | <zoology> See Epizoic. Source: Websters Dictionary (01 Mar 1998) |
| ectozoon | Origin: NL, fr. Gr. Outside + an animal. <zoology> See Epizoon. Source: Websters Dictionary (01 Mar 1998) |