Webster's Revised Unabridged Dictionary · 1913

Ecphractic

Ecphractic , adjective

[Greek {not transcribed}, from {not transcribed} to open; 'ek out + {not transcribed} to block up: compare French ecphractique.]

(Medicine) Serving to dissolve or attenuate viscid matter, and so to remove obstructions; deobstruent.
(Medicine) An ecphractic medicine. — Harvey