acanthinn.

Brit.

/əˈkanθɪn/, U.S.

/əˈkænθən/

Forms: 1800s– acanthin, 1800s– acanthine.

Origin: A borrowing from German. Etymon: German Acanthin.

Etymology: < German Acanthin ( E. Haeckel Die Radiolarien (1862) I. 32) < ancient Greek ἄκανθα thorn (see acanthus n.) + German -in -in suffix¹. Compare French acanthine (1863 or earlier; < German).

Biochemistry. disused.

A substance forming the skeletal elements of certain radiolarians whose skeletons are not siliceous, eventually identified as strontium chloride.Acanthin was originally thought to be a horny substance resembling chitin.

ΚΠ

1876 A. Macalister Introd. Animal Morphol. & Systematic Zool.: Invertebrata iv. 63 Acanthometridae, with no framework round the central capsule, but twenty radiant, symmetrical, acanthin spicules piercing it.

1887 Encycl. Brit. XXII. 106/1 In the Radiolaria, the skeleton of the Protozoa..may consist of a peculiar firm organic substance called ‘acanthin’.

1921 T. J. Parker & W. A. Haswell Text-bk. Zool. (ed. 3) I. 63 A skeleton..formed, as a rule, of silica, but in one subdivision of the class (the Acantharia) of a substance called acanthin, composed of strontium sulphate.

1946 H. Woods Palæontol. Invertebr. (ed. 8) 30 A skeleton..is generally present and is usually composed of silica; but in one group of Radiolaria it consists of a substance which was formerly regarded as horny in nature and termed acanthin.

This entry has been updated (OED Third Edition, December 2011; most recently modified version published online June 2022).

单词	acanthin
释义	acanthinn. Brit. /əˈkanθɪn/, U.S. /əˈkænθən/ Forms: 1800s– acanthin, 1800s– acanthine. Origin: A borrowing from German. Etymon: German Acanthin. Etymology: < German Acanthin ( E. Haeckel Die Radiolarien (1862) I. 32) < ancient Greek ἄκανθα thorn (see acanthus n.) + German -in -in suffix¹. Compare French acanthine (1863 or earlier; < German). Biochemistry. disused. A substance forming the skeletal elements of certain radiolarians whose skeletons are not siliceous, eventually identified as strontium chloride.Acanthin was originally thought to be a horny substance resembling chitin. ΚΠ 1876 A. Macalister Introd. Animal Morphol. & Systematic Zool.: Invertebrata iv. 63 Acanthometridae, with no framework round the central capsule, but twenty radiant, symmetrical, acanthin spicules piercing it. 1887 Encycl. Brit. XXII. 106/1 In the Radiolaria, the skeleton of the Protozoa..may consist of a peculiar firm organic substance called ‘acanthin’. 1921 T. J. Parker & W. A. Haswell Text-bk. Zool. (ed. 3) I. 63 A skeleton..formed, as a rule, of silica, but in one subdivision of the class (the Acantharia) of a substance called acanthin, composed of strontium sulphate. 1946 H. Woods Palæontol. Invertebr. (ed. 8) 30 A skeleton..is generally present and is usually composed of silica; but in one group of Radiolaria it consists of a substance which was formerly regarded as horny in nature and termed acanthin. This entry has been updated (OED Third Edition, December 2011; most recently modified version published online June 2022). < n.1876
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