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trophospongian
trophospongian adj. 
/ˌtrəʊfə(ʊ)ˈspʌn(d)ʒɪən/, /ˌtroʊfoʊˈspəndʒiən/ rare (now disused) = trophospongial adj.
Brit. /ˌtrɒfə(ʊ)ˈspʌn(d)ʒɪən/
, /ˌtrɒfə(ʊ)ˈspʌn(d)ʒɪən//ˌtrəʊfə(ʊ)ˈspʌn(d)ʒɪən/U.S. /ˌtrɑfoʊˈspəndʒiən/
, /ˌtrɑfoʊˈspəndʒiən//ˌtroʊfoʊˈspəndʒiən/ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > embryo parts > [adjective] > trophoblast, etc.
parablastic1883
trophospongian1889
neuroectodermic1908
neuroectodermal1946
trophectodermal1946
syncytiotrophoblastic1961
1889 A. A. W. Hubrecht in Q. Jrnl. Microsc. Sci. 30 326 The topography of the trophospongian region.
1908 A. A. W. Hubrecht in Q. Jrnl. Microsc. Sci. 53 127 The first is a result of a limited trophoblastic proliferation simultaneous with a trophospongian process.
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