† pseudembryon.

Origin: Formed within English, by compounding. Etymons: pseudo- comb. form, embryo n.

Etymology: < pseudo- comb. form + embryo n.

Zoology. Obsolete.

A larva of an echinoderm, as the pluteus of a sea urchin or brittlestar, the bipinnaria of a starfish, etc. Also: a larval form in certain other invertebrates, as the parenchymella of a sponge.

ΚΠ

1863 Proc. Royal Soc. 1862–3 12 428 He [sc. Professor Wyville Thomson] believes that all the peculiar independently organized zooids developed from the whole or from a part of the segmented yelk..must be regarded as assimilative extensions of sarcode, analogous in function to the embryonic absorbent appendages in the higher animals. For such a organism the term ‘pseudembryo’ is proposed. In the Echinoderm subkingdom,..these pseudembryos present [a] considerable range of organization.

1877 Encycl. Brit. VII. 631/2 The pseud-embryo or echinopædium, at first ciliated and spheroidal, becomes..wedge-shaped.

1880–1 W. Saville-Kent Man. Infusoria I. 191 The coalescing amœbiform zooids..form by repeated segmentation a pseud-embryo, or so-called ciliated larva.

Derivatives

† pseudembryonic adj. Obsolete

ΚΠ

1863 W. Thomson in Nat. Hist. Rev. 12 409 It is impossible to avoid at once recognizing in the vascular pseudembryonic appendage of Asteracanthion violaceus, the three water-feet of Brachiolaria.

1877 Encycl. Brit. VII. 631/2 The development of the ambulacral system commences with the formation of a sac which lies to the left of the junction of the pseud-embryonic gullet and stomach.

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online June 2018).

单词	pseudembryo
释义	† pseudembryon. Origin: Formed within English, by compounding. Etymons: pseudo- comb. form, embryo n. Etymology: < pseudo- comb. form + embryo n. Zoology. Obsolete. A larva of an echinoderm, as the pluteus of a sea urchin or brittlestar, the bipinnaria of a starfish, etc. Also: a larval form in certain other invertebrates, as the parenchymella of a sponge. ΚΠ 1863 Proc. Royal Soc. 1862–3 12 428 He [sc. Professor Wyville Thomson] believes that all the peculiar independently organized zooids developed from the whole or from a part of the segmented yelk..must be regarded as assimilative extensions of sarcode, analogous in function to the embryonic absorbent appendages in the higher animals. For such a organism the term ‘pseudembryo’ is proposed. In the Echinoderm subkingdom,..these pseudembryos present [a] considerable range of organization. 1877 Encycl. Brit. VII. 631/2 The pseud-embryo or echinopædium, at first ciliated and spheroidal, becomes..wedge-shaped. 1880–1 W. Saville-Kent Man. Infusoria I. 191 The coalescing amœbiform zooids..form by repeated segmentation a pseud-embryo, or so-called ciliated larva. Derivatives † pseudembryonic adj. Obsolete ΚΠ 1863 W. Thomson in Nat. Hist. Rev. 12 409 It is impossible to avoid at once recognizing in the vascular pseudembryonic appendage of Asteracanthion violaceus, the three water-feet of Brachiolaria. 1877 Encycl. Brit. VII. 631/2 The development of the ambulacral system commences with the formation of a sac which lies to the left of the junction of the pseud-embryonic gullet and stomach. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online June 2018). < n.1863
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