Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ectocarpic Relating to brown algae of the genus Ectocarpus. ectocarpically With reference to brown algae (of the genus Ectocarpus) ectocarpoid Any brown alga of the order Ectocarpales ectocellular On the outside of a cell (on the outside of a cell wall) ectocervical Of or pertaining to the ectocervix ectocervicovaginal Outside the cervix but within the vagina (typically of an animal) ectocervix The part of the cervix that extends into the vagina ectochoroidea Loose, pigmented connective tissue that forms the outer layer of the choroid ectocingulid A cingulid on the exterior of a tooth ectocingulum An exterior cingulum ectocochlear Having the shell external to the body. ectocochleate Having an external shell ectocochliate Having a shell. ectocolpus A groove on the surface of a pollen grain ectocommensal A commensal organism that lives on the surface of another organism ectocommensalism commensalism in which one organism is outside of the other ectoconchion A craniometric landmark that is the most lateral point of the orbital lateral wall ectocondylar Relating to an ectocondyle ectocondyle An external condyle (on the side away from the body) ectocone The outer cusp on the teeth of the radula in a gastropod. ectocoracoid The equivalent of a clavicle in dipnoan fish ectocornea The outer layer of the cornea ectocranial external to the cranium ectocranially externally to the cranium ectocranium The exterior of the skull ectocrine Producing secretions by the decomposition of organisms ectocuneiform One of the bones of the tarsus. ectocyst The exoskeleton of some members of Bryozoa. ectocystic Of or pertaining to ectocysts. ectocytic Outside of a cell ectocytosis A form of exocytosis in which ectosomes are released from a cell ectoderm The outermost of the three tissue layers in the embryo of a metazoan animal, which produces through development, the epidermis (skin) and nervous system of the adult. ectodermal Of or pertaining to the ectoderm. ectodermally With reference to, or by way of the ectoderm. ectodermic Of or relating to the ectoderm. ectodermosis Any disorder of an organ derived from an ectoderm ectodin A secreted inhibitor of bone morphogenetic proteins ectodistal outside and distal ectodomain The portion of a polypeptide on a cell membrane that extends beyond the membrane into the extracellular space. ectodynamorphic Of a soil: owing its features to external conditions, especially climate. ectodysplasin Any of a family of transmembrane proteins associated with ectoderm ectoentropic Outside of or defying thermodynamic entropy. ectoenzymatic Relating to an ectoenzyme ectoenzyme Any enzyme found outside of (or on the outer surface of) a cell ectoflexid Synonym of ectostylid. ectoflexus An indentation on the buccal face of the upper molar in some early vertebrates ectogene An organism developed by ectogenesis. ectogenesis The development of an organism in an artificial environment outside the body in which it naturally grows. ectogenetic Relating to ectogenesis. ectogenic That originates outside of an organism ectogenous Able to survive outside of its host ectogenual On the outside of the knee ectogeny The effect of pollen on parts of the seed and fruit lying outside the embryo and endosperm. ectoglenoid Outside the glenoid cavity ectognath An appendage used for eating in Eurypterida ectognathous That project outwards from the head ectohormonal Relating to ectohormones. ectohormone Any hormone that is secreted into an individual's environment and affects the behaviour or activity of another individual (of the same or different species) in the manner of a pheromone. ectohydric That transports water on its external surface ectohydrolytic ectocytic hydrolytic ectoine 1,4,5,6-tetrahydro-2-methyl-4-pyrimidinecarboxylic acid, a compound found in several bacteria, used in skincare and suncare products ectokinase Synonym of exokinase. eCTOL The electrified version of CTOL. Electric flight for conventional take-off and landing aircraft. ectolateral outside and lateral ectolecithal Having the food yolk, at the commencement of segmentation, in a peripheral position, and the cleavage process confined to the centre of the egg. ectoloph A ridge or crest on an upper molar tooth of a horse or rhinoceros. ectolophid A crest connecting the ectostylid to the mesoconid. ectomarginal On an outer margin ectomaxillar anterolateral to the maxilla ectomedial outside and medial ectomere Any of the blastomeres from which the ectoderm forms ectomeric of, or relating to an ectomere. ectomesenchymal Relating to the ectomesenchyme ectomesenchymally In an ectomesenchymal manner ectomesenchyme A form of mesenchyme, in the embryo, consisting of neural crest cells; forms the tissues of the neck and cranium ectomesenchymoma A rare, fast-growing tumor of the nervous system or soft tissue that occurs mainly in children. ectomesocuneiform An outer mesocuneiform. ectomesolophid An extreme (at an extremity) mesolophid ectometaloph A fusion of an ectoloph and a metaloph. ectometer A device designed to detect ghosts. ectomicrobiota External microbiota (that typically live on the skin, fur, feathers etc of an animal) ectomorph Someone with a lean, only slightly muscular body ectomorphic Of or pertaining to an ectomorph. ectomorphically In an ectomorphic manner. ectomorphy The condition of being ectomorphic ectomy Any operation involving surgical excision or removal. ectomycorrhiza A form of mycorrhiza consisting of a sheath of fungus around the root tips of the symbiotic plant. ectomycorrhizal Of or pertaining to ectomycorrhizae. ectomycorrhization The formation of ectomycorrhizas with another species ectomycorrhizosphere The mycorrhizosphere of an ectomycorrhizal fungus Ecton A village and civil parish in North Northamptonshire district, Northamptonshire, England, east of Northampton, and previously in Wellingborough district (OS grid ref SP8263). ectoneural Describing the part of the nervous system of echinoderms that develop from the ectoderm ectonucleosidase Any nucleosidase that is active outside of a cell ectonucleoside Any nucleoside that is found outside of a cell ectonucleotidase Any nucleotidase that is active outside of a cell ectonucleotide Any nucleotide found outside a cell ectooecial Relating to an ectooecium ectooecium The outer, often calcified, layer of the wall of an ovicell of a bryozoan. ectoparasite A parasite that lives on the surface of a host organism; such as the Demodex mite, which lives in human hair and eyelashes. ectoparasitic Of or pertaining to ectoparasites. ectoparasitically In an ectoparasitic manner ectoparasiticidal Acting as an ectoparasiticide; killing ectoparasites. ectoparasiticide Any pesticide designed to kill parasites that live on the exterior of a host. ectoparasitised parasitised by ectoparasites ectoparasitism The condition of being an ectoparasite. ectoparasitize To parasitise with ectoparasites ectoparasitoid An ectoparasitic parasitoid. ectoparasitosis infestation with ectoparasites ectopeptidase Synonym of endopeptidase. ectoperitrophic Outside the peritrophic membrane ectophagous That feeds on the external surface of its host ectophallic Relating to the ectophallus ectophallus The external phallic wall of some insects ectophloic Of stems in which the phloem is external to the xylem. ectophosphatase ectocellular phosphatase ectophosphodiesterase Any phosphodiesterase that is active outside of a cell. ectophosphorylation extracellular phosphorylation (of proteins etc) ectophyte Any plant that lives as a parasite on the surface of another organism ectophytic Relating to ectophytes ectophytically In an ectophytic manner ectopia The condition where an organ or other body part has an abnormal position. ectopic Relating to ectopia. ectopically In an ectopic manner ectopicity The condition or state of being ectopic. ectopion The condition of, or an instance of, ectopia. ectoplacental Outside, or surrounding the placenta ectoplasm A visible substance believed to emanate from the body of a spiritualistic medium during communication with the dead. ectoplasmic Relating to, or having the properties or appearance of, ectoplasm. ectoplasmically In an ectoplasmic manner. ectoplast plasma membrane ectoplastic of, related to, or composed of ectoplasm; ectoplasmic ectoproct Synonym of bryozoan. ectoproctan Any member of the Ectoprocta. ectoproctous Of or relating to the Ectoprocta. ectoprotein Any extracellular protein ectopsocid Any barklouse in the family Ectopsocidae. ectopterygoid A ventral skull bone found in some tetrapods and fish ectopy Abnormal position of an organ or other body part. Ector A surname. ectoretina The outer layer of the retina ectorhinal Of or pertaining to the exterior of the nose ectorhizosphere The outermost part of a rhizosphere ectosagittal Outside of the sagittal plane. ectosarc The ectoplasm of an amoeba and similar protozoa. ectosomal Relating to ectosomes ectosome An extracellular vesicle assembled at, and released from the plasma membrane ectospermalege Part of the spermalege, derived from the ectoderm and consisting of a groove in the right-handed posterior margin of the fifth sclerite, overlying a pleural membrane. In order to access the female's haemocoel during traumatic insemination, male bedbugs insert their needle-like penis into the groove and pierce the pleural membrane. ectosphere The cortical zone of a centrosphere ectosteal Of or pertaining to ectostosis. ectosteally In an ectosteal manner.