Pollute(pō-lūt'). (L. polluere = to make unclean, to soil.) To make foul or unclean.

Pores (porz). (L. porus = a way, a passage.) Small openings in the skin to help in breathing.

Prey (prā). (L. præda = property taken in war.) An animal in the chase; game.

Prolific (prō-lif'-ik). Fruitful; producing young in abundance.

Propel (prō-pel'). (L. propellere = to drive, or push forward.) To urge onward by force.

Prophet (prof'-et). One who tells of the future.

Pulvillus (pul-vil'-us); pl. Pulvilli. (L. = a little cushion.) A little pad or cushion on an insect's foot.

Ravenous (rav'-n-us). Greedy, furiously hungry.

Repel (re-pel'). (L. repellere = to drive back.) To drive back, to check.

Resinous (rez'-i-nus). Like resin, which is made from pine pitch.