In its sense first used by botanists in the 1830s, orchidaceous means "belonging to the family Orchidaceae"-that is, to the orchid family, a very large family of flowering plants. While the basic shape of an orchid is simple-three petals with, on many orchids, an enlarged middle petal-there is no such thing as a typical orchid. Orchids range in size from very tiny flowers on inch-high plants to flowers a foot across, and they grow in habitats from tropical rain forests to semideserts. But when people use orchidaceous as a synonym for "flashy" in phrases like "orchidaceous writing," "orchidaceous colors," and "orchidaceous ladies," it's the colorful, showy tropical species they have in mind-species which, as Jacob Breynius, a 17th-century German botanist, put it, "surely excite our greatest admiration."
Examples of orchidaceous in a Sentence
Recent Examples on the WebFantastical sets and costumes by Geoffrey Holder combine orchidaceous foliage out of a Henri Rousseau jungle with a Levantine hero and a Japanese villain.
The New Yorker, 19 Feb. 2021 Stefano and Domenico looked to Donna Floria’s orchidaceous Belle Epoque beauty and famous clothes for aspects of their alta moda collection.
Hamish Bowles, Vogue, 11 July 2017
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New Latin Orchidaceae, family name (re-formation of earlier Orchideae, from orchid-, erroneously taken as the stem of Latin orchis "orchid" + -eae, feminine plural of Latin -eus-eous) + -ous — more at orchis