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orchiditis or·chi·di·tis (ôr'kĭ-dī'tĭs)n. Variant of orchitis.
orchitis or·chi·tis (ôr-kī'tĭs) or or·chi·di·tis (ôr'kĭ-dī'tĭs)n. Inflammation of the testis. Also called didymitis, testitis.