Term: mucus and muco- as preffix
Origin: Latin mucus
Proto-Indo-European *meu-k- (=slimy, slippery). Gognate included also Ancient Greek word μύκης (mikes)(=mushroom).
a slippery or slimy and colloid secretion from the lining of the mucous membrane, containing mucins, antiseptic enzymes and immunoglobulins.
Runon derivatives :
mucoid, mucoidal, mucous, mucin, mucinogen, mucinosis, mucinous, muciparous, mucolipidosis, mucoprotein, mucosa,
the term phlegm is used for viscid mucus and it is derived from Ancient Greek word φλέγω/phlego (= heat, blaze)