a.1.(Anat.) Having several bellies; - applied to muscles which are made up of several bellies separated by short tendons.
2.(Zool.) Pertaining to the Polygastrica.
n.1.(Zool.) One of the Polygastrica.
References in periodicals archive ?
Selective activation of different portions of the rectus abdominis muscle is theoretically possible because, in morphological terms, the rectus abdominis is a polygastric (literally, "with several bellies") muscle with three to four portions on the left and right sides of the body.