Unit 1 Vocabulary

Front

persistent

Back

(adj) continuing to do something or to try to do something even though it is difficult or other people want you to stop.

Front

perforate

Back

(v) pierce and make a hole or holes in.

Front

percolate

Back

(v) (of a liquid or gas) filter gradually through a porous surface or substance.

Front

perceive

Back

(v) to interpret or see someone or something in a particular way; to regard as.

Front

pervasive

Back

(adj) spreading widely throughout an area or a group of people (especially of an unwelcome influence or physical effect).

Front

porous

Back

(adj) describing a material or membrane that allows liquids or gases to pass through it.

Front

symptoms

Back

(n) physical or mental features that indicate a condition or disease.

Front

interpret

Back

(v) to explain the meaning of information or actions.

Front

influence

Back

(n) the capacity to have an effect on the character, development, or behavior of someone or something.

Front

filter

Back

(v) to remove unwanted material from a substance.