† pentacrininn.

Origin: A borrowing from Latin, combined with an English element. Etymons: Latin Pentacrinus , -in suffix¹.

Etymology: < scientific Latin Pentacrinus (see pentacrinite n.) + -in suffix¹. N.E.D. (1905) gives the pronunciation as (pentæ·krinin) /pɛnˈtakrᵻnɪn/.

Chemistry. Obsolete.

A purple colouring matter obtained from certain crinoids, including those of the genus Pentacrinus.

ΚΠ

1877 H. N. Moseley in Q. Jrnl. Microsc. Sci. 17 5 The majority of the specimens were found to yield a colouring matter which is extremely well defined by characteristic absorption spectra, and which may be termed Pentacrinin, having as yet, been observed only in the genus Pentacrinus.

1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 575 Two colouring matters giving special absorption bands are found in Crinoids, Pentacrinin from Holopus, Pentacrinus and Metacrinus, and Antedonin from three species of Actinometra.

This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2020).

单词	pentacrinin
释义	† pentacrininn. Origin: A borrowing from Latin, combined with an English element. Etymons: Latin Pentacrinus , -in suffix¹. Etymology: < scientific Latin Pentacrinus (see pentacrinite n.) + -in suffix¹. N.E.D. (1905) gives the pronunciation as (pentæ·krinin) /pɛnˈtakrᵻnɪn/. Chemistry. Obsolete. A purple colouring matter obtained from certain crinoids, including those of the genus Pentacrinus. ΚΠ 1877 H. N. Moseley in Q. Jrnl. Microsc. Sci. 17 5 The majority of the specimens were found to yield a colouring matter which is extremely well defined by characteristic absorption spectra, and which may be termed Pentacrinin, having as yet, been observed only in the genus Pentacrinus. 1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 575 Two colouring matters giving special absorption bands are found in Crinoids, Pentacrinin from Holopus, Pentacrinus and Metacrinus, and Antedonin from three species of Actinometra. This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2020). < n.1877
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