acinetanadj.n.

Brit.

/asᵻˈniːtn/, U.S.

/ˌæsəˈnitn/

Origin: A borrowing from Latin, combined with an English element. Etymons: Latin Acineta , -an suffix.

Etymology: < scientific Latin Acineta, genus name (C. G. Ehrenberg 1833 or 1834) < ancient Greek ἀκίνητος motionless (see akinetic adj.; probably alluding to the fact that the tentacles are not in constant motion like the cilia or flagella of other protozoans) + -an suffix. Compare earlier acinetiform adj.

Zoology.

†A. adj.

Belonging to the group of protozoans typified by the genus Acineta (see sense B.). Cf. acinetiform adj. Obsolete. rare.

ΚΠ

1876 Harper's Mag. Feb. 471/2 Microscopists will be interested in an account by Hertwig of a new acinetan infusorian (Podophrya gemmipara).

B. n.

A protozoan of the suctorian genus Acineta or (more widely) the family Acinetidae, living attached to a substrate or to the body of an aquatic animal (on which it may be parasitic) and typically having a roughly spherical body in a cup-shaped lorica with several tentacles for the ingestion of food. Now rare.

ΚΠ

1878 A. Macalister Zool. Invertebr. Animals 28 Other minute forms, called Acinetae, are small stalked masses whose surface is studded with radiating, retractile tubular suckers.]

1881–2 W. Saville-Kent Man. Infusoria II. 804 When an Infusorium is securely caught by an Acinetan and held at the extremity of one of its tentacles, a rupture is produced in the cuticle of the victim at the point of contact.

1897 Science 1 Oct. 515/1 Under the wharf and on the piles were great forests of campanularian hydroids..; while on them, as parasites, gigantic acinetans were abundant.

1927 J. B. S. Haldane & J. S. Huxley Animal Biol. xii. 261 The Ciliate Stylonychia Mytilus infested with parasitic Acinetans.

1941 Trans. Amer. Microsc. Soc. 60 26 Such crowded conditions favor infestation with the remarkable Acinetan, Pottsia infusiorium.

This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021).

单词	acinetan
释义	acinetanadj.n. Brit. /asᵻˈniːtn/, U.S. /ˌæsəˈnitn/ Origin: A borrowing from Latin, combined with an English element. Etymons: Latin Acineta , -an suffix. Etymology: < scientific Latin Acineta, genus name (C. G. Ehrenberg 1833 or 1834) < ancient Greek ἀκίνητος motionless (see akinetic adj.; probably alluding to the fact that the tentacles are not in constant motion like the cilia or flagella of other protozoans) + -an suffix. Compare earlier acinetiform adj. Zoology. †A. adj. Belonging to the group of protozoans typified by the genus Acineta (see sense B.). Cf. acinetiform adj. Obsolete. rare. ΚΠ 1876 Harper's Mag. Feb. 471/2 Microscopists will be interested in an account by Hertwig of a new acinetan infusorian (Podophrya gemmipara). B. n. A protozoan of the suctorian genus Acineta or (more widely) the family Acinetidae, living attached to a substrate or to the body of an aquatic animal (on which it may be parasitic) and typically having a roughly spherical body in a cup-shaped lorica with several tentacles for the ingestion of food. Now rare. ΚΠ 1878 A. Macalister Zool. Invertebr. Animals 28 Other minute forms, called Acinetae, are small stalked masses whose surface is studded with radiating, retractile tubular suckers.] 1881–2 W. Saville-Kent Man. Infusoria II. 804 When an Infusorium is securely caught by an Acinetan and held at the extremity of one of its tentacles, a rupture is produced in the cuticle of the victim at the point of contact. 1897 Science 1 Oct. 515/1 Under the wharf and on the piles were great forests of campanularian hydroids..; while on them, as parasites, gigantic acinetans were abundant. 1927 J. B. S. Haldane & J. S. Huxley Animal Biol. xii. 261 The Ciliate Stylonychia Mytilus infested with parasitic Acinetans. 1941 Trans. Amer. Microsc. Soc. 60 26 Such crowded conditions favor infestation with the remarkable Acinetan, Pottsia infusiorium. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021). < adj.n.1876
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