from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Having many wrinkles or creases; ridged or wrinkled.
  • adj. Botany Having a rough, wrinkled surface, as in certain prominently veined leaves.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having wrinkles, creases or ridges
  • adj. Having a rough, wrinkled surface

from the GNU version of the Collaborative International Dictionary of English

  • adj. Wrinkled; full of wrinkles

from The Century Dictionary and Cyclopedia

  • Having rugæ; rugate or rugous; corrugated; wrinkled.
  • In botany, rough and wrinkled: applied to leaves in which the reticulate venation is very prominent beneath, with corresponding creases on the upper side, and also to lichens, algæ, etc., in which the surface is reticulately roughened.
  • Specifically, of or pertaining to the Rugosa.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of leaves; ridged or wrinkled


from The American Heritage® Dictionary of the English Language, 4th Edition

Latin rūgōsus, from rūga, wrinkle.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin rūgōsus "wrinkled"


  • And by esoteric, I mean "squamous and rugose", nudge nudge wink wink.

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  • Finally, something more frightening than the epilogue to The Invisible Man, with nary a squamous or rugose in sight.

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  • I remember being in high school reading Lovecraft with a dictionary beside me to look up works like “rugose” and “ululation”.

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  • Later Paleozoic seas were dominated by crinoid and blastoid echinoderms, articulate brachiopods, graptolites, and tabulate and rugose corals.


  • The Permian extinction, 244 million years ago, devastated the marine biota: tabulate and rugose corals, blastoid echinoderms, graptolites, and most crinoids died out, as did the last of the trilobites.


  • That's a pretty squamous, rugose, and blasphemous thought.

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  • The Jennifer Morgue takes the reader on a wild adventure through the worlds of Lovecraft and Ian Fleming, non-Euclidian mathematics and computer hackerdom — sort of like Austin Powers, only more squamous and rugose — with fast cars and faster women.

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  • There is no certainly known extinct order of Protozoa; there is but one among the Coelenterata — that of the rugose corals; there is none among the Mollusca; there are three, the Cystidea,


  • Fossil rugose corals preserve daily and yearly growth patterns and show that the day was about 22 hours long 370 million years ago, in rough agreement with the 22.7 hours predicted from a constant rate of slowing Scrutton 1964; Wells 1963.

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  • HP Lovercraft was the inventor of a ground-effects vehicle in the late 1930's, who was last seen in a crypt in southern Louisiana, being carried off by a squamous rugose cone.

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