American Heritage® Dictionary of the English Language, Fourth Edition
- v. To enclose or become enclosed in or as if in a sheath.
- v. To turn or become turned inward.
- v. To infold or become infolded so as to form a hollow space within a previously solid structure, as in the formation of a gastrula from a blastula.
Century Dictionary and Cyclopedia
- To sheathe; insert or receive as into a sheath; introvert: opposed to evaginate.
- v. medicine, surgery To fold up or enclose into a sheath-like or pouch-like structure, either naturally or as part of a surgical procedure.
- v. medicine To turn or fold inwardly.
- v. medicine Infolding to create a hollow space where none had existed, as with a gastrula forming from a blastula.
- adj. biology sheathed
- adj. biology Having one portion of a hollow organ drawn back within another portion.
GNU Webster's 1913
- v. To insert as in a sheath; to produce intussusception in.
- adj. Sheathed.
- adj. Having one portion of a hollow organ drawn back within another portion.
- v. fold inwards
- v. sheathe.
- Medieval Latin invāgīnāre, invāgīnāt- : Latin in-, in; see in-2 + Latin vāgīna, sheath. (American Heritage® Dictionary of the English Language, Fourth Edition)
“When they wheel and dance like miniature starlings, the consequence is that three-dimensional shapes are formed, as tissues invaginate in response to the movements of cells;* or swell or shrink due to local patterns of growth and cell death.”
“Its area therefore increases and, having nowhere else to go, it has little choice but to buckle or invaginate.”
“The sheets of tissue that fold, invaginate and turn inside out in a developing embryo do indeed grow, and it is that very growth that provides part of the motive force which, in origami, is supplied by the human hand.”
“These pits invaginate and pinch off to form coated vesicles (3).”
“These consist of two highly vascular inflexions of the tela chorioidea, which invaginate the lower part of the roof of the ventricle and are everywhere covered by the epithelial lining of the cavity.”
“It is covered by and adherent to a fold of pia mater, named the tela chorioidea of the third ventricle, from the under surface of which a pair of vascular fringed processes, the choroid plexuses of the third ventricle, project downward, one on either side of the middle line, and invaginate the epithelial roof into the ventricular cavity.”
“Such a gastrula, formed mainly by overgrowth of the epiblast, is called an epibolic gastrula, as distinguished from the invaginate gastrula of amphioxus.”
“If you wanted to make an origami model with a sheet of living tissue instead of dead paper, there is at least a sporting chance that, if the sheet were to grow in just the right way, not uniformly but faster in some parts of the sheet than in others, this might automatically cause the sheet to assume a certain shape – and even fold or invaginate or turn inside out in a certain way – without the need for hands to do the stretching and folding, and without the need for any global plan, but only local rules.”
“3D reconstruction from serial immuno-EM or from EM tomography showed that they do not originate from internal membranes but invaginate from the plasma membrane, suggesting that BIN1 promotes strong curvature from plasma membrane subdomains as anticipated by previous studies For eukaryotic cell transfection, human MTM1, MTMR2 (NM_016156) and MTMR4 (NM_004687) cDNA”
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