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单词 melanosperm
释义

melanospermn.

Origin: A borrowing from Latin. Etymon: Latin Melanospermeae.
Etymology: < scientific Latin Melanospermeae (see melanospermous adj.); compare -sperm comb. form. Compare earlier melanospermous adj. N.E.D. (1906) gives the pronunciation as (me·lănoˌspə̄ɹm) /ˈmɛlənəʊspɜːm/.
Botany. Obsolete.
An alga of the (former) subclass Melanospermeae, characterized by dark olive spores.
ΚΠ
1870 Amer. Naturalist 4 293 The Melanosperms, black or fuscous seeded sea-weeds, less comely and attractive but by far more useful to savage and civilized man alike, remain for a cursory glance at least.
1884 Public Opinion 3 Oct. 426/1 The melanosperms..are found chiefly within high- and low-water mark.
1903 W. S. Furneaux Sea Shore (1922) xv. 350 Their delicate green fronds [sc. those of the Chlorospermeae] contrast richly with the olive Melanosperms and the pink and white corallines.
1917 N. Malcolmson & H. H. Kelsey Brit. Patent 107,605 2 When using the Melanosperm or Chlorosperm or Rhodosperm powder or paste or a dyeing liquid derived from any of these groups of sea-weed the addition to the dye-beck of a sulphuric-acid solution intensifies and deepens the colour produced on the fabric.
This entry has been updated (OED Third Edition, June 2001; most recently modified version published online December 2018).
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n.1870
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