| imaginary | Existing only in imagination or fancy; not real; fancied; visionary; ideal. "Wilt thou add to all the griefs I suffer Imaginary ills and fancied tortures?" (Addison) <mathematics> Imaginary expression or quantity, points, lines, surfaces, etc, imagined to exist, although by reason of certain changes of a figure they have in fact ceased to have a real existence. Synonym: Ideal, fanciful, chimerical, visionary, fancied, unreal, illusive. Origin: L. Imaginarius: cf. F. Imaginaire. Source: Websters Dictionary (01 Mar 1998) |
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| companion artery to sciatic nerve | <anatomy, nerve> Origin, inferior gluteal; distribution, sciatic nerve; anastomoses, branches of profunda femoris. Synonym: arteria comitans nervi ischiadici, companion artery to sciatic nerve. (05 Mar 2000) |
| companion cell | <plant biology> Relatively small plant cell, with little or no vacuole, found adjacent to a phloem sieve tube and originating with the latter from a common mother cell. Thought to be involved in translocation of sugars in and out of the sieve tube. (05 Jan 1998) |
| companion lymph nodes of accessory nerve | The nodes of the lateral deep cervical group that are located along the accessory nerve; their efferent vessels pass to the supraclavicular lymph nodes. Synonym: companion lymph nodes of accessory nerve, nodi lymphatici comitantes nervi accessorii. (05 Mar 2000) |
| companion vein | A vein accompanying another structure. Synonym: accompanying vein, companion vein. (05 Mar 2000) |