submucosa
Concise Oxford English Dictionary © 2008 Oxford University Press:
submucosa /ˌsʌbmjuːˈkəʊsə/
▶noun (pl. submucosae /-siː/) Physiology the layer of areolar connective tissue lying beneath a mucous membrane.
– derivatives
submucosal adjective.
submucosal adjective.
– origin C19: from mod. L. submucosa (membrana), fem. of submucosus ‘submucous’.
'submucosa' also found in these Oxford entries:

