| fluid wave | A sign of free fluid in the abdominal cavity; percussion on one side of the abdomen transmits a wave that is felt on the opposite side. (05 Mar 2000) |
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| follicular fluid | <physiology> A fluid consisting of sex steroid hormones, plasma proteins, mucopolysaccharides, and electrolytes that is present in the vesicular ovarian follicle (graafian follicle) surrounding the ovum. (12 Dec 1998) |