filopodiumn.
/ˌfʌɪlə(ʊ)ˈpəʊdɪəm/, U.S. /ˌfɪləˈpoʊdiəm/, /ˌfaɪləˈpoʊdiəm/ Biology.
Originally: a long, thin pseudopodium of a protist. In later use also: a similar cytoplasmic protrusion from a motile metazoan cell.
ΘΚΠ
the world > life > biology > physical aspects or shapes > projection or protuberance > [noun] > foot-like protrusion
pseudopodium1844
pseudopod1874
filopodium1906
rhizopodium1913
reticulopodium1931
plasmaneme1969
1906 M. Hartog in Cambr. Nat. Hist. I. ii. 47 Lang distinguishes ‘lobopodia’, ‘filopodia’, and ‘pseudopodia’ according to their form,—blunt, thread-like, or anastomosing.
1926 G. N. Calkins Biol. Protozoa iii. 143 Filopodia are..formed of clear hyaline ectoplasm in typical cases... They creep along the substratum where they serve mainly for food capture.
1964 Ann. Rev. Physiol. 26 27 The filopodia attach wherever they come in contact with the ectodermal inner surface.
1973 Nature 13 July 93/2 On the growth cone, for example, there are numerous filopodia which extend for 10μm or more.
2008 N. A. Khan Emerging Protozoan Pathogens 468 Axopodia are similar to filopodia but contain slender filaments.
Derivatives
ˌfiloˈpodial adj. of, relating to, or of the nature of a filopodium.
ΘΚΠ
the world > life > biology > physical aspects or shapes > projection or protuberance > [adjective] > pseudopod
pseudopodial1856
pseudopodian1859
pseudopodal1880
filopodial1944
1944 Amer. Jrnl. Bot. 31 50/1 This layer is composed of filopodial material.
1964 Ann. Rev. Physiol. 26 30 From the ameboid tip of axons in culture, there are projected numerous filopodial processes.
2004 Nature 12 Aug. 735/2 The cellular pool of actin monomers is used up in fuelling the rampant polymerization of filopodial actin filaments.
This entry has been updated (OED Third Edition, September 2016; most recently modified version published online March 2022).
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n.1906