Primordia
noun, plural primordia
[prahy-mawr-dee-uh] /praɪˈmɔr di ə/ (Show IPA). Embryology.
1.
the first recognizable, histologically differentiated stage in the development of an organ.
noun (pl) -dia (-dɪə)
1.
(biology) an organ or part in the earliest stage of development
primordium pri·mor·di·um (prī-môr’dē-əm)
n. pl. pri·mor·di·a (-dē-ə)
An aggregation of cells in the embryo indicating the first trace of an organ or structure.
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adjective 1. constituting a beginning; giving origin to something derived or developed; original; elementary: primordial forms of life. 2. Embryology. first formed. 3. pertaining to or existing at or from the very beginning: primordial matter. adjective 1. existing at or from the beginning; earliest; primeval 2. constituting an origin; fundamental 3. (biology) of or relating […]
- Primordiality
adjective 1. constituting a beginning; giving origin to something derived or developed; original; elementary: primordial forms of life. 2. Embryology. first formed. 3. pertaining to or existing at or from the very beginning: primordial matter. adjective 1. existing at or from the beginning; earliest; primeval 2. constituting an origin; fundamental 3. (biology) of or relating […]
- Primordially
adjective 1. constituting a beginning; giving origin to something derived or developed; original; elementary: primordial forms of life. 2. Embryology. first formed. 3. pertaining to or existing at or from the very beginning: primordial matter. adjective 1. existing at or from the beginning; earliest; primeval 2. constituting an origin; fundamental 3. (biology) of or relating […]
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primordial ovarian follicle n. An ovarian follicle in which the primordial oocyte is surrounded by a single layer of flattened follicular cells.
- Primordial-soup
noun, Biology. 1. the seas and atmosphere as they existed on earth before the existence of life, consisting primarily of an oxygen-free gaseous mixture containing chiefly water, hydrogen, methane, ammonia, and carbon dioxide. 2. a laboratory preparation containing the substances believed to have composed primordial soup, and used in experiments seeking to understand the origin […]