epibolic invagination
- epibolic invagination
- Invagination In*vag`i*na"tion, n. [L. pref. in- + vagina
sheath.]
[1913 Webster]
1. (Biol.) The condition of an invaginated organ or part.
[1913 Webster]
2. The inward movement of the wall of a tissue or cell, to form a cavity; also, the cavity thus formed. [PJC]
3. Specifically: (Biol., Embryology) The inward movement of one part of the wall of a blastula, to form a gastrula; the process of gastrulation, in which layers of the ovum are differentiated. [1913 Webster +PJC]
Note: In {embolic invagination}, one half of the blastosphere is pushed in towards the other half, producing an embryonic form known as a gastrula. -- In {epibolic invagination}, a phenomenon in the development of some invertebrate ova, the epiblast appears to grow over or around the hypoblast. [1913 Webster]
The Collaborative International Dictionary of English. 2000.
Look at other dictionaries:
Invagination — In*vag i*na tion, n. [L. pref. in + vagina sheath.] [1913 Webster] 1. (Biol.) The condition of an invaginated organ or part. [1913 Webster] 2. The inward movement of the wall of a tissue or cell, to form a cavity; also, the cavity thus formed.… … The Collaborative International Dictionary of English
Epibolic — Ep i*bol ic, a. [Gr. ? to throw upon, add to; epi upon + ? to throw.] (Biol.) Growing or covering over; said of a kind of invagination. See under {Invagination}. [1913 Webster] … The Collaborative International Dictionary of English
embolic invagination — Invagination In*vag i*na tion, n. [L. pref. in + vagina sheath.] [1913 Webster] 1. (Biol.) The condition of an invaginated organ or part. [1913 Webster] 2. The inward movement of the wall of a tissue or cell, to form a cavity; also, the cavity… … The Collaborative International Dictionary of English