Definition of Primitive groove. Meaning of Primitive groove. Synonyms of Primitive groove

Here you will find one or more explanations in English for the word Primitive groove. Also in the bottom left of the page several parts of wikipedia pages related to the word Primitive groove and, of course, Primitive groove synonyms and on the right images related to the word Primitive groove.

Definition of Primitive groove

Primitive groove
Primitive Prim"i*tive, a. [L. primitivus, fr. primus the first: cf. F. primitif. See Prime, a.] 1. Of or pertaining to the beginning or origin, or to early times; original; primordial; primeval; first; as, primitive innocence; the primitive church. ``Our primitive great sire.' --Milton. 2. Of or pertaining to a former time; old-fashioned; characterized by simplicity; as, a primitive style of dress. 3. Original; primary; radical; not derived; as, primitive verb in grammar. Primitive axes of co["o]rdinate (Geom.), that system of axes to which the points of a magnitude are first referred, with reference to a second set or system, to which they are afterward referred. Primitive chord (Mus.), that chord, the lowest note of which is of the same literal denomination as the fundamental base of the harmony; -- opposed to derivative. --Moore (Encyc. of Music). Primitive circle (Spherical Projection), the circle cut from the sphere to be projected, by the primitive plane. Primitive colors (Paint.), primary colors. See under Color. Primitive Fathers (Eccl.), the acknowledged Christian writers who flourished before the Council of Nice, A. D. 325. --Shipley. Primitive groove (Anat.), a depression or groove in the epiblast of the primitive streak. It is not connected with the medullary groove, which appears later and in front of it. Primitive plane (Spherical Projection), the plane upon which the projections are made, generally coinciding with some principal circle of the sphere, as the equator or a meridian. Primitive rocks (Geol.), primary rocks. See under Primary. Primitive sheath. (Anat.) See Neurilemma. Primitive streak or trace (Anat.), an opaque and thickened band where the mesoblast first appears in the vertebrate blastoderm. Syn: First; original; radical; pristine; ancient; primeval; antiquated; old-fashioned.

Meaning of Primitive groove from wikipedia

- termed the primitive pit. The primitive pit extends towards the caudal end in a narrow depression in the primitive streak called the primitive groove (Latin:...
- of the anterior end of the primitive streak. Between these folds is a shallow median groove, the neural groove. The groove gradually deepens as the neural...
- the center form the early primitive streak. As these cells converge inward, a depression forms called the primitive groove and functions as an opening...
- begin to in****te. This in****tion expands posteriorly into the primitive groove as the cell layers continue to move into the space between the embryonic...
- hypoblast. The primitive streak is key in the development of the major body axes. The primitive groove forms as a depression in the primitive streak as it...
- folds, two longitudinal ridges in front of the primitive streak of the developing embryo. The groove gradually deepens as the neural folds become elevated...
- bilaminar embryonic disc primary yolk sac amniotic cavity primitive streak primitive groove chorionic villi secondary yolk sac early gastrulation gastrulation...
- Primitive is the second studio album by American heavy metal band Soulfly, released in 2000 through Roadrunner Records. As of 2002, Primitive has sold...
- tubercles are separated from each other by a deep groove, the bicipital groove (intertubercular groove; bicipital sulcus), which lodges the long tendon...
- excavate tunnels into grains. In more derived weevils, the rostrum has a groove in which the weevil can fold the first segment of its antennae. Most weevils...