exogastricとは 意味・読み方・使い方

形容詞

exogastric (not comparable)

1. Outside of the stomach.
   • 2007, Alan H. Freeman, Radiology of the Stomach and Duodenum, page 139:

     Preoperatively and intraoperatively it is difficult to distinguish benign and malignant lesions; all may demonstrate a mixture of intramural, endogastric and exogastric appearances.

2. Of the shell of a mollusc, curving forwards towards the head.
   • 1957, Rousseau Hayner Flower, ‎Curt Teichert, The cephalopod order Discosorida, page 41:

     Vexing are two exogastric genera of the Simard limestone.

   • 1998, Norman Dennis Newell, Bivalves: An Eon of Evolution:

     I interpret Mellopegma as exogastric and separate it from Peel's (1991) class Helcionelloida because of its extremely narrow aperture with uniformly ventrally curved lateral margins.

等位語

• endogastric