rudimentary organ

rudimentary organ
a 1. primordium. 2. an imperfectly or incompletely developed organ.

Medical dictionary. 2011.

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  • organ — /awr geuhn/, n. 1. Also called pipe organ. a musical instrument consisting of one or more sets of pipes sounded by means of compressed air, played by means of one or more keyboards, and capable of producing a wide range of musical effects. 2. any …   Universalium

  • organ — Any part of the body exercising a specific function, as of respiration, secretion, or digestion. SYN: organum [TA], organon. [L. organum, fr. G. organon, a tool, instrument] accessory organs 1. SYN …   Medical dictionary

  • Bidder's organ — is a spherical, brownish organ in any member of the family Bufonidae, or simply, toads. The organ is located just in front of the kidney, or, mesonephros. It is formed at the cranial tip of the male and female gonad during the larval stage.… …   Wikipedia

  • vomeronasal organ — n either of a pair of small blind pouches or tubes in many vertebrates that are situated one on either side of the nasal septum or in the buccal cavity and that are reduced to rudimentary pits in adult humans but are developed in reptiles,… …   Medical dictionary

  • vomeronasal organ — noun Date: circa 1926 either of a pair of small blind pouches or tubes in many vertebrates that are situated one on either side of the nasal septum or in the buccal cavity and that are reduced to rudimentary pits in adult humans but are developed …   New Collegiate Dictionary

  • brush-shaped organ — (Class Ostracoda): Rudimentary third pair of thoracopods (ninth paired appendage of body). Consists of basal part (stem) bearing distal cluster of hairs. Typically restricted to male and considered to be sensory. (Syn. brush like structure)… …   Crustacea glossary

  • bidder's organ — noun Usage: usually capitalized B : a rudimentary ovary present near the fat body in both sexes of some toads sometimes becoming functional in old males …   Useful english dictionary

  • jacobson's organ — noun Usage: usually capitalized J Etymology: after L.L.Jacobson : a slender horizontal canal in the nasal mucosa that ends in a blind pouch, has an olfactory function, and is rudimentary in adult man but highly developed in most reptiles …   Useful english dictionary

  • epoophoron — A collection of rudimentary tubules in the mesosalpinx between the ovary and the uterine tube; composed of two portions, the longitudinal duct of epoöphoron and the transverse ductules of epoöphoron, they are the vestiges of tubules of the middle …   Medical dictionary

  • evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… …   Universalium

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