| placenta, supernumerary | A succenturiate or accessory placenta. (12 Dec 1998) |
|---|---|
| nipple, supernumerary | An extra nipple. (12 Dec 1998) |
| supernumerary | Beyond the normal number. Anything supernumerary is extra. (12 Dec 1998) |
| supernumerary breast | A milk-secreting gland located elsewhere than at the normal place on the chest and existing in addition to the two usual mammae. Synonym: mamma accessoria, accessory breast, supernumerary mamma. (05 Mar 2000) |
| supernumerary digit | An extra finger or toe. (12 Dec 1998) |
| supernumerary kidney | A kidney, in addition to the two usually present, developed from the splitting of the nephrogenic blastema or from a separate metanephric blastema, into which a partial or complete reduplication of the ureteral stalk enters to form a separate, capsulated kidney; in some cases, the separation of the reduplicated organ is incomplete. (05 Mar 2000) |
| supernumerary mamma | A milk-secreting gland located elsewhere than at the normal place on the chest and existing in addition to the two usual mammae. Synonym: mamma accessoria, accessory breast, supernumerary mamma. (05 Mar 2000) |
| supernumerary nipple | An extra nipple. (12 Dec 1998) |
| supernumerary organs | Organ's exceeding the normal number, which may develop from multiple foci of organization in an organ-formative field larger (originally) than that of the definitive main organ; such organ's are aberrant but frequently not a cause of disease; illness may persist if they are left in the body after therapeutic removal of the main organ, e.g., accessory spleen. Synonym: accessory organs. (05 Mar 2000) |
| supernumerary placenta | A succenturiate or accessory placenta. (12 Dec 1998) |
| supernumerary teeth | <dentistry> Some people have extra teeth. These are called supernumerary teeth. (08 Jan 1998) |
| digit, supernumerary | An extra finger or toe. (12 Dec 1998) |
| tooth, supernumerary | An extra tooth, erupted or unerupted, resembling or unlike the other teeth in the group to which it belongs. Its presence may cause malposition of adjacent teeth or prevent their eruption. (12 Dec 1998) |
| accessory chromosome | A chromosome existing without its normal homologous chromosome; at the reduction division of gametogenesis an accessory chromosome is likely to be included in one daughter cell and not in the other, but may be lost completely by lagging behind on the equatorial plate. Synonym: monosome, odd chromosome, unpaired allosome, unpaired chromosome. (05 Mar 2000) |
| acentric chromosome | A fragment of a chromosome lacking a centromere and unable to attach to the mitotic spindle, therefore unable to take part in the division of a nucleus and randomly distributed in daughter cells. Synonym: acentric fragment. (05 Mar 2000) |