De signifies down or from; epi significs on, near, during; and ex has the meaning out of. Ex also becomes e, ec, or ef.

de scend' ex tract' ep i dem'ic de tract' e vade' ep'i lep sy de note' ef fuse' ep i glot'tis de vote' ec'logue ep i derm'is

Dia, ob, per, and circum mean respectively apart, against, through, and around. With English words, dis gives a negative meaning.

dis tend' dis sev'er dis em bar'rass ob trude' ob lique'ly ob lit'er ate per plex' per fect'ive per sist'en cy cir'cuit cir cum volve' cir cum ja'cent

Lesson 167.

Mal signifies evil, ill; mono is from Greek monos, single; pan (Greek), signifies all, every thing; and poly (Greek polus), many.

mal'con tent ma li'cious ma lev'o lent mon'o tone mon'o gram mo nop'o Iy pan'o ply pan'the ist pan o ra'ma pol'y gon pol'y pus pol'y the ism

Pro is a Latin preposition signifying for, before, and forth; uni (Latin unus, one) signifies one or producing one; syn (sometimes syl and sym) signifies together; and sub (sometimes suf, sup, and sug) denotes under, below.

pro'noun u'ni ty syn'the sis sub scribe' pro pel' u'ni form syl'la ble suf'fix pro duce' u'ni corn sym'pa thy sup press' pro vide' u'ni val ve syn tac'tic sug gest'

Lesson 168.