metacnemen.

Brit.

/ˈmɛtəkniːm/, U.S.

/ˈmɛdəkˌnim/

Origin: A borrowing from Greek, combined with an English element. Etymons: meta- prefix, Greek κνήμη.

Etymology: < meta- prefix + ancient Greek κνήμη tibia (see cnemial adj.).

Zoology. Now rare.

In a sea anemone or stony coral: a secondary mesentery or septum.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Anthozoa Actinozoa > order Zoantharia > secondary mesentery

metacneme1900

1900 J. E. Duerden in Johns Hopkins Univ. Circular 19 47/2 The first six pairs of mesenteries are found to differ so essentially in their mode of origin and significance from the mesenteries appearing later that I find it convenient to have some word which will include them either as a whole or individually. I therefore propose for them the term ‘Protocnemes’, and shall refer to the mesenteries subsequently developed as ‘Metacnemes’.

1902 J. E. Duerden in Ann. & Mag. Nat. Hist. 9 397 The metacnemes arise as unilateral pairs at one, three, seven, etc. regions within all the six primary exocoeles.

1934 Amer. Midland Naturalist 15 117 The secondary mesenteries (metacnemes) are added bilaterally at one region within each of the primary ventro-lateral intermesenterial chambers.

1940 L. H. Hyman Invertebr. I. vii. 589 In most forms [of sea anemone] additional septa called metacnemes arise in pairs.

Derivatives

metaˈcnemic adj. of or relating to metacnemes.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [adjective] > of or relating to the Anthozoa > belonging to order Zoantharia > relating to secondary mesentery

metacnemic1902

1902 J. E. Duerden in Ann. & Mag. Nat. Hist. 9 397 The different fundamental types of metacnemic sequence now known within the Actiniaria and Madreporaria.

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	metacneme
释义	metacnemen. Brit. /ˈmɛtəkniːm/, U.S. /ˈmɛdəkˌnim/ Origin: A borrowing from Greek, combined with an English element. Etymons: meta- prefix, Greek κνήμη. Etymology: < meta- prefix + ancient Greek κνήμη tibia (see cnemial adj.). Zoology. Now rare. In a sea anemone or stony coral: a secondary mesentery or septum. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Anthozoa Actinozoa > order Zoantharia > secondary mesentery metacneme1900 1900 J. E. Duerden in Johns Hopkins Univ. Circular 19 47/2 The first six pairs of mesenteries are found to differ so essentially in their mode of origin and significance from the mesenteries appearing later that I find it convenient to have some word which will include them either as a whole or individually. I therefore propose for them the term ‘Protocnemes’, and shall refer to the mesenteries subsequently developed as ‘Metacnemes’. 1902 J. E. Duerden in Ann. & Mag. Nat. Hist. 9 397 The metacnemes arise as unilateral pairs at one, three, seven, etc. regions within all the six primary exocoeles. 1934 Amer. Midland Naturalist 15 117 The secondary mesenteries (metacnemes) are added bilaterally at one region within each of the primary ventro-lateral intermesenterial chambers. 1940 L. H. Hyman Invertebr. I. vii. 589 In most forms [of sea anemone] additional septa called metacnemes arise in pairs. Derivatives metaˈcnemic adj. of or relating to metacnemes. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [adjective] > of or relating to the Anthozoa > belonging to order Zoantharia > relating to secondary mesentery metacnemic1902 1902 J. E. Duerden in Ann. & Mag. Nat. Hist. 9 397 The different fundamental types of metacnemic sequence now known within the Actiniaria and Madreporaria. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1900
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