par·a-a·mi·no·sal·i·cyl·ic acid (pār'ə-ə-mē'nō-sāl'ĭ-sĭl'ĭk, ām'ə-nō-) n.
Abbr. PAS A bacteriostatic agent, C7H7NO3, prescribed for the treatment of tuberculosis. Also called aminosalicylic acid.
pas (pä) n.
pl.pas (pä)
A step or dance.
The right to go before; precedence.
[French, from Old French, from Latin passus, step; see pace1.]