plasmalemman.

Brit.

/ˈplazməlɛmə/, U.S.

/ˈplæzməˌlɛmə/

Inflections: Plural plasmalemmas, plasmalemmae, plasmalemmata.

Origin: Formed within English, by compounding. Etymons: plasma n., lemma n.²

Etymology: < plasma n. + lemma n.² Compare Portuguese plasmalema (1923; probably < English). Compare plasmagel n., plasmasol n.The plural form plasmalemmas is most usual; the form plasmalemmata , after ancient Greek λέμματα, plural of λέμμα lemma n.², is uncommon.

Biology.

A lipid bilayer surrounding the cytoplasm of a cell; a plasma membrane, a cell membrane; esp. one immediately within the wall of a plant cell.

ΘΚΠ

the world > life > biology > substance > cell > parts of cell > [noun] > wall or membranes

septum1720

cell wall1840

valve1852

periplast1853

stroma1872

ghost1879

endoplasmic reticulum1883

plasma membrane1893

plasmalemma1923

unit membrane1958

purple membrane1968

1923 S. O. Mast in Proc. National Acad. Sci. U.S.A. 9 258 By careful observations on Amœba proteus in motion the following structures can clearly be differentiated: (1) A central elongated fluid portion; (2) A solid layer surrounding the fluid portion; (3) A very thin elastic surface layer or membrane. The first I shall designate the plasmasol, the second the plasmagel and the third the plasmalemma.

1931 J. Q. Plowe in Protoplasma 12 202 Mast..has given us the term ‘plasmalemma’... It has seemed permissible..to extend its use to the botanical world, and to employ it to denote a distinct, differentiated layer on the outer surface of the plant protoplast.

1966 Amer. Jrnl. Bot. 53 770/2 Wardrop (1965) proposes the concept that new plasmalemmas formed within the cytoplasm can separate peripheral regions of the protoplast.

1970 Austral. Jrnl. Bot. 18 285 Host plasmalemmae are invaginated by invading hyphae, and encapsulations are formed.

1993 European Jrnl. Phycol. 28 7/1 Box scales cover the underlayer scales of the flagellar pit and the plasmalemma outside the pit.

Derivatives

ˈplasmalemmal adj. of, relating to, or formed from a plasmalemma.

ΘΚΠ

the world > life > biology > substance > cell > parts of cell > [adjective] > wall or membranes

intramural1879

transmembrane1961

plasmalemmal1968

1968 Jrnl. Cell Biol. 37 252 (caption) Grazing section of the endothelium in a blood capillary of rat myocardium showing the large accumulation of plasmalemmal vesicles..on the tissue front.

1992 Gut 33 1477/1 Myogenic control is related..to the constant rhythmic polarisation and depolarisation of the plasmalemmal membranes which gives rise to the electrical slow wave or electrical control activity.

This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).

单词	plasmalemma
释义	plasmalemman. Brit. /ˈplazməlɛmə/, U.S. /ˈplæzməˌlɛmə/ Inflections: Plural plasmalemmas, plasmalemmae, plasmalemmata. Origin: Formed within English, by compounding. Etymons: plasma n., lemma n.² Etymology: < plasma n. + lemma n.² Compare Portuguese plasmalema (1923; probably < English). Compare plasmagel n., plasmasol n.The plural form plasmalemmas is most usual; the form plasmalemmata , after ancient Greek λέμματα, plural of λέμμα lemma n.², is uncommon. Biology. A lipid bilayer surrounding the cytoplasm of a cell; a plasma membrane, a cell membrane; esp. one immediately within the wall of a plant cell. ΘΚΠ the world > life > biology > substance > cell > parts of cell > [noun] > wall or membranes septum1720 cell wall1840 valve1852 periplast1853 stroma1872 ghost1879 endoplasmic reticulum1883 plasma membrane1893 plasmalemma1923 unit membrane1958 purple membrane1968 1923 S. O. Mast in Proc. National Acad. Sci. U.S.A. 9 258 By careful observations on Amœba proteus in motion the following structures can clearly be differentiated: (1) A central elongated fluid portion; (2) A solid layer surrounding the fluid portion; (3) A very thin elastic surface layer or membrane. The first I shall designate the plasmasol, the second the plasmagel and the third the plasmalemma. 1931 J. Q. Plowe in Protoplasma 12 202 Mast..has given us the term ‘plasmalemma’... It has seemed permissible..to extend its use to the botanical world, and to employ it to denote a distinct, differentiated layer on the outer surface of the plant protoplast. 1966 Amer. Jrnl. Bot. 53 770/2 Wardrop (1965) proposes the concept that new plasmalemmas formed within the cytoplasm can separate peripheral regions of the protoplast. 1970 Austral. Jrnl. Bot. 18 285 Host plasmalemmae are invaginated by invading hyphae, and encapsulations are formed. 1993 European Jrnl. Phycol. 28 7/1 Box scales cover the underlayer scales of the flagellar pit and the plasmalemma outside the pit. Derivatives ˈplasmalemmal adj. of, relating to, or formed from a plasmalemma. ΘΚΠ the world > life > biology > substance > cell > parts of cell > [adjective] > wall or membranes intramural1879 transmembrane1961 plasmalemmal1968 1968 Jrnl. Cell Biol. 37 252 (caption) Grazing section of the endothelium in a blood capillary of rat myocardium showing the large accumulation of plasmalemmal vesicles..on the tissue front. 1992 Gut 33 1477/1 Myogenic control is related..to the constant rhythmic polarisation and depolarisation of the plasmalemmal membranes which gives rise to the electrical slow wave or electrical control activity. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < n.1923
随便看	moiststriking moisttinged moisture moisture away moisture barrier moisture content moisture cream moisture lotion moisture meter moisture movement moisture regain moisture seal moisture stress moisture supply moisture-bearing moisture-charged moisture-holding moisture-laden moisture-loving moisture-proof moisture-proofing moisture-proofness moisturebearing moisturecharged moistured