megalaestheten.

Brit.

/ˌmɛɡəˈliːsθiːt/, U.S.

/ˌmɛɡəˈlɛsˌθit/

Forms: 1800s– megalaesthete, 1900s– megalesthete (U.S.).

Origin: A borrowing from Greek, combined with an English element. Etymons: megalo- comb. form, Greek αἰσθητής.

Etymology: < megalo- comb. form + ancient Greek αἰσθητής person who perceives (see aesthete n.), here used for ‘organ of sense’; apparently coined by H. N. Moseley (see quot. 1885¹). Compare micraesthete n.

Zoology.

In a chiton: any of the numerous photoreceptive sensory structures distributed in megalopores over the surface of the valves.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Mollusca > [noun] > mollusc or shell-fish > parts of mollusc

ungulaa1382

mantlea1475

trunk1661

diaphragm1665

lid1681

operculum1681

ear1688

beard1697

corslet1753

scar1793

opercle1808

pleura1826

pallium1834

byssus1835

cephalic ganglia1835–6

opercule1836

lingual ribbon1839

tube1839

cloak1842

test1842

collar1847

testa1847

rachis1851

uncinus1851

land-shell1853

mantle cavity1853

mesopodium1853

propodium1853

radula1853

malacology1854

gill comb1861

pallial cavity1862

tongue-tootha1877

mesopode1877

odontophore1877

pallial chamber1877

shell-gland1877

rasp1879

protopodium1880

ctenidium1883

osphradium1883

shell-sac1883

tooth-ribbon1883

megalaesthete1885

rachidian1900

scungille1953

tentacle-sheath-

1885 H. N. Moseley in Q. Jrnl. Microsc. Sci. 25 43 To which I shall apply the name megalæsthetes, believing that they are peculiar organs of touch and are at all events peculiar to Chitonidæ.

1885 H. N. Moseley in Rep. Brit. Assoc. 781 The network terminates at the surface of the tegmentum all over in a series of elongate cylindrical organs of touch (‘megalæsthetes’).

1902 Encycl. Brit. XXX. 794/2 The pallial sense-organs..are epithelial papillæ, containing nerve-end bulbs... They are termed according to size, micræsthetes and megalæsthetes.

1958 J. E. Morton Molluscs viii. 147 The larger receptors, the megalaesthetes, lie at the centre of clusters of micraesthetes. These are much more complex, forming in many chitons..undoubted eyes, with a simple lens..and a retina.

1992 M. Stachowitsch Invertebr. 194/2 According to their relative size one may distinguish larger megalesthetes or macresthetes (in megalopores) and smaller micresthetes (in micropores).

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

单词	megalaesthete
释义	megalaestheten. Brit. /ˌmɛɡəˈliːsθiːt/, U.S. /ˌmɛɡəˈlɛsˌθit/ Forms: 1800s– megalaesthete, 1900s– megalesthete (U.S.). Origin: A borrowing from Greek, combined with an English element. Etymons: megalo- comb. form, Greek αἰσθητής. Etymology: < megalo- comb. form + ancient Greek αἰσθητής person who perceives (see aesthete n.), here used for ‘organ of sense’; apparently coined by H. N. Moseley (see quot. 1885¹). Compare micraesthete n. Zoology. In a chiton: any of the numerous photoreceptive sensory structures distributed in megalopores over the surface of the valves. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Mollusca > [noun] > mollusc or shell-fish > parts of mollusc ungulaa1382 mantlea1475 trunk1661 diaphragm1665 lid1681 operculum1681 ear1688 beard1697 corslet1753 scar1793 opercle1808 pleura1826 pallium1834 byssus1835 cephalic ganglia1835–6 opercule1836 lingual ribbon1839 tube1839 cloak1842 test1842 collar1847 testa1847 rachis1851 uncinus1851 land-shell1853 mantle cavity1853 mesopodium1853 propodium1853 radula1853 malacology1854 gill comb1861 pallial cavity1862 tongue-tootha1877 mesopode1877 odontophore1877 pallial chamber1877 shell-gland1877 rasp1879 protopodium1880 ctenidium1883 osphradium1883 shell-sac1883 tooth-ribbon1883 megalaesthete1885 rachidian1900 scungille1953 tentacle-sheath- 1885 H. N. Moseley in Q. Jrnl. Microsc. Sci. 25 43 To which I shall apply the name megalæsthetes, believing that they are peculiar organs of touch and are at all events peculiar to Chitonidæ. 1885 H. N. Moseley in Rep. Brit. Assoc. 781 The network terminates at the surface of the tegmentum all over in a series of elongate cylindrical organs of touch (‘megalæsthetes’). 1902 Encycl. Brit. XXX. 794/2 The pallial sense-organs..are epithelial papillæ, containing nerve-end bulbs... They are termed according to size, micræsthetes and megalæsthetes. 1958 J. E. Morton Molluscs viii. 147 The larger receptors, the megalaesthetes, lie at the centre of clusters of micraesthetes. These are much more complex, forming in many chitons..undoubted eyes, with a simple lens..and a retina. 1992 M. Stachowitsch Invertebr. 194/2 According to their relative size one may distinguish larger megalesthetes or macresthetes (in megalopores) and smaller micresthetes (in micropores). This entry has been updated (OED Third Edition, June 2001; most recently modified version published online March 2022). < n.1885
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