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a combining form used, with the meaning “orchid,” “testicle,” in the formation of compound words: orchidology; orchidotomy.
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Also orchi-, orchid-.

Origin of orchido-

orchid- (erroneously taken as stem of Greek órchisorchis; cf. orchid) + -o-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021


What does orchido- mean?

Orchido- is a combining form used like a prefix meaning either “testicle” (testis) or “orchid.” In medicine, it refers to testicles. In botany, it refers to orchid flowers.

Orchido- comes from the Greek órchis, meaning “testicle.” How did the Greek word for testicle give rise to the name of a type of beautiful flower? Well, the roots of orchids were thought to resemble testicles. Learn more at our entry for orchis.

What are variants of orchido-?

When combined with words or word elements that begin with a vowel, orchido- becomes orchid-, as in orchiditis. Another variant is orchi-, as in orchiectomy.

The combining form orchio-, as in orchioplasty, is also used to represent “testicle” in medical terminology.

Examples of orchido-

One example of a term from botany that features the combining form orchido- is orchidology, meaning “the branch of botany or horticulture dealing with orchids.”

Orchido- means “orchid” in botany, as we’ve noted. The combining form logy may be familiar from terms like biology; it is used to name sciences or bodies of knowledge. Orchidology literally translates to “the study of orchids.”

What are some words that use the combining form orchido-?

What are some other forms that orchido- may be commonly confused with?

The word orchestra, despite beginning with the letters orch-, is not related to the combining form orchido-. Learn more about the Greek origins of this musical term at our entry for the word.

Break it down!

The combining form -tomy is used in medical terms to mean “cutting, incision.” What does the surgical procedure of an orchidotomy involve?  

Medical definitions for orchido-


The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.