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. [1913 Webster]

2. Of or pertaining to a former time; old-fashioned; characterized by simplicity; as, a primitive style of dress. [1913 Webster]

3. Original; primary; radical; not derived; as, primitive verb in grammar. [1913 Webster]

{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 {Primitive trace} (Anat.), an opaque and thickened band where the mesoblast first appears in the vertebrate blastoderm. [1913 Webster]

Syn: First; original; radical; pristine; ancient; primeval; antiquated; old-fashioned. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • primitive groove — n a depression or groove in the epiblast of the primitive streak that extends forward to the primitive knot * * * a lengthwise median furrow in the primitive streak of the embryo; in human embryos it is clearly visible during the third week.… …   Medical dictionary

  • Primitive groove — Infobox Embryology Name = Primitive groove Latin = GraySubject = 6 GrayPage = 47 Caption = Surface view of embryo of Hylobates concolor. The amnion has been opened to expose the embryonic disk. Caption2 = System = CarnegieStage = 9 Precursor =… …   Wikipedia

  • primitive groove — noun : a depression or groove in the epiblast of the primitive streak that extends forward to the primitive knot …   Useful english dictionary

  • 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… …   The Collaborative International Dictionary of English

  • Primitive axes of coordinate — 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… …   The Collaborative International Dictionary of English

  • Primitive chord — 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… …   The Collaborative International Dictionary of English

  • Primitive circle — 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… …   The Collaborative International Dictionary of English

  • Primitive colors — 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… …   The Collaborative International Dictionary of English

  • Primitive Fathers — 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… …   The Collaborative International Dictionary of English

  • Primitive plane — 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… …   The Collaborative International Dictionary of English

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”