The Collaborative International Dictionary of English v.0.48:

amygdalic \am`yg*dal"ic\ ([.a]m`[i^]g*d[.a]l"[i^]k [a^]s"[i^]d),
   n. (Chem.)
   An organic acid (C6H5.CH(OH).COOH) extracted from bitter
   almonds; called also mandelic acid and
   [alpha]-Hydroxybenzeneacetic acid.
   [PJC]