UNIT 1: ACROSS, THROUGH
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perceive
(v.) to be aware of through the senses, observe; to grasp mentally
Dialect
A regional variety of a language distinguished by vocabulary, spelling, and pronunciation.
diameter
A straight line passing from side to side through the center of a circle or sphere.
Diaphragm
Large, flat muscle at the bottom of the chest cavity that helps with breathing
persistent
Not giving up or stopping
percolate
To cause (a liquid) to pass through a porous body; filter.
permeable
penetrable; porous; allowing liquids or gas to pass through
perforate
to make holes in something
diagnose
to say exactly what an illness or the cause of a problem is
pervasive
widespread
