| external conjugate diameter | The distance in a straight line between the depression under the last spinous process of the lumbar vertebrae and the upper edge of the pubic symphysis. Synonym: Baudelocque's diameter, external conjugate diameter. (05 Mar 2000) |
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| false conjugate | The anteroposterior dimension of the inlet that measures the clinical distance from the promontory of the sacrum to the lower margin of the symphysis pubica. Synonym: conjugata diagonalis, diagonal conjugate diameter, false conjugate. (05 Mar 2000) |
| folic acid conjugate | A folate with three molecules of glutamic acid (pteropterin) instead of one, or with seven (pteroylheptaglutamic acid or vitamin Bc conjugate). (05 Mar 2000) |