Unit 1 - Across, Through (DIA and PER)

persistent

(ADJ) continuing to do something or to try to do something even though it is difficult or others want you to stop

permeable

(ADJ) describing a material or membrane that allows liquids or gases to pass through

pervasive

(ADJ) spreading widely throughout an area or a group of people (especially an unwelcome influence or problem)

diaphragm

(N) a dome-shaped partition separating the thorax from the abdomen in mammals.

dialect

(N) a form of a language that is spoken in a particular area and that uses some of its own words

diameter

(N) a straight line passing from side to side through the center of a circle or sphere

percolate

(V) filter gradually through a porous surface or substance

diagnose

(V) identify the nature of an illness or other problem by examination of symptoms

perforate

(V) pierce and make a hole or holes in

perceive

(V) to interpret or see something in a particular way

diagonal

a straight line from one corner to another corner

persuade

to win someone over by arguing or asking