| ECTASIAS | • ectasias n. Plural of ectasia. • ECTASIA n. the lengthening of a short syllable, also ECTASIS. |
| ECTHYMAS | • ecthymas n. Plural of ecthyma. • ECTHYMA n. (Greek) a skin disease with large round pustules. |
| ECTODERM | • ectoderm n. (Biology) Outermost of the three tissue layers in the embryo of a metazoan animal. Through development… • ECTODERM n. the external layer of an embryo, also EXODERM. |
| ECTOGENE | • ECTOGENE n. a gene involved in the development of an embryo in artificial conditions. |
| ECTOGENY | • ectogeny n. (Botany) The effect of pollen on parts of the seed and fruit lying outside the embryo and endosperm. • ECTOGENY n. the effect of pollen on the tissues of a plant. |
| ECTOMERE | • ectomere n. Any of the blastomeres from which the ectoderm forms. • ECTOMERE n. a cell that develops into ectoderm. |
| ECTOPIAS | • ectopias n. Plural of ectopia. • ECTOPIA n. abnormal displacement of body parts, also ECTOPY. |
| ECTOPIES | • ectopies n. Plural of ectopy. • ECTOPY n. abnormal displacement of body parts, also ECTOPIA. |
| ECTOSARC | • ectosarc n. The ectoplasm of an amoeba and similar protozoa. • ECTOSARC n. the outermost layer of some protozoans. |
| ECTOZOAN | • ectozoan n. Alternative form of ectozoon. • ECTOZOAN n. a parasite on the body of an animal, also ECTOZOON. |
| ECTOZOIC | • ectozoic adj. (Zoology) epizoic. • ECTOZOIC adj. externally parasitic. |
| ECTOZOON | • ectozoon n. (Zoology) An epizoon. • ECTOZOON n. a parasite on the body of an animal, also ECTOZOAN. |
| ECTROPIC | • ectropic adj. Relating to ectropy. • ectropic adj. Relating to ectropion. • ECTROPIC adj. displaying the red inner surface of the eyelid. |