| endoderm |
the inner layer of cells of an embryo, which develops into the linings of the digestive tract, certain glands, and other internal organs. |
| endodontics |
(used with a sing. verb) the branch of dentistry that diagnoses and treats diseases of the dental pulp; root canal therapy. |
| endogamy |
marriage within one's own class, clan, caste, tribe, or other social unit. (Cf. exogamy.) [2 definitions] |
| endogenous |
coming or produced from or developing within, as certain spores, or due to internal conditions, as certain diseases. (Cf. exogenous.) [2 definitions] |
| endometrial |
of or pertaining to the mucous membrane that lines the uterus. |
| endometriosis |
the abnormal growth of uterine tissue in other areas of the vaginal tract or on the ovaries. |
| endometrium |
the membrane that lines the uterus. |
| endomorphic |
of, relating to, or designating a heavy body type characterized by relative prominence of the abdomen and fatty tissues. (Cf. ectomorphic, mesomorphic.) [2 definitions] |
| endoplasm |
the inner, comparatively fluid part of the cellular material surrounding the nucleus. (Cf. ectoplasm.) |
| end organ |
any specialized receptor at the end of a sensory or motor nerve fiber. |
| endorphin |
one of several peptides secreted in the brain that have a tranquilizing, euphoric, or pain-relieving effect on the body. |
| endorse |
to approve or give support to. [2 definitions] |
| endorsement |
a statement given in support of a person or product, as in an advertisement or political campaign. [3 definitions] |
| endoscope |
a long, slender, tubular optical instrument inserted into an inner, hollow body part, such as the lungs or bowel, esp. for examination, diagnosis, or surgical treatment. |
| endoscopic |
of or relating to the use of a flexible fiber-optic instrument to examine an inner part of the body. |
| endoscopy |
a medical procedure, carried out for the purpose of examination, in which an endoscope, a long, tubular instrument with an attached camera, is inserted into the body, esp. through the throat or bowel. |
| endoskeleton |
the internal bony supporting framework characteristic of vertebrates. (Cf. exoskeleton.) |
| endosperm |
tissue that is derived from the embryo sac of a plant and that surrounds and nourishes the embryo. |
| endothelial |
of or pertaining to a layer of flat cells that lines blood vessels, lymphatic vessels, and some internal body cavities. |
| endothelium |
a layer of flat cells that lines blood vessels, lymphatic vessels, and some internal body cavities. |
| endothermic |
of, concerning, or characteristic of a chemical process accompanied or caused by absorption of heat. (Cf. exothermic.) |