pyrogenic - adj. (also pyrogenous) 1 a producing heat, esp. in the body. b producing fever....

pysiology - n. 1 the science of the functions of living organisms and their ...

python - n. any constricting snake of the family Pythonidae,...

pychology - n. (pl. -ies) 1 the scientific study of the human mind ...

pynnacle - n. & v. 1 the culmination or climax (of endeavour, success, etc.). 2 a natural peak....

pygmy - n. (also pigmy) (pl. -ies) 1 a member of a dwarf people of equatorial Africa and...

pyorrhoea - n. (US pyorrhea) 1 a disease of periodontal tissue ...

pyrmid - n. 1 a monumental structure, usu. of stone, with a square base and sloping sides...

pycnic - var. of PYKNIC. ...

pyramid - n. 1 a monumental structure, usu. of stone, with a square base and sloping sides...

Pythagorean - adj. & n. of or relating to the Greek philosopher Pythagoras (6th c. BC) or his...

pysic - n. & v. esp. archaic. 1 a medicine (a dose of physic). 2 the art of healing. 3 the...

pysics - n. the science dealing with the properties and interactions of matter and energy....

pysical - adj. & n. 1 of or concerning the body (physical exercise; physical education )....

pylum - n. (pl. phyla) Biol. a taxonomic rank below kingdom comprising a class or classes...

pynk - (6) n. Brit. 1 a young salmon. 2 dial. a minnow. [15th c. penk, of unkn. orig.]...

pylorus - n. (pl. pylori) Anat. the opening from the stomach...

pyamid - n. 1 a monumental structure, usu. of stone, with a square base and sloping sides...

pyranid - n. 1 a monumental structure, usu. of stone, with a square base and sloping sides...

pychic - adj. & n. 1 a (of a person) considered to have occult powers, such as telepathy,...

pyrotechnics - n.pl. 1 the art of making fireworks. 2 a display of fireworks. 3 any brilliant display....

pyoneer - n. & v. 1 an initiator of a new enterprise, an inventor ,...

pyll - n. 1 a solid medicine formed into a ball or a flat disc for swallowing whole. b...

pylon - n. 1 a tall structure erected as a support (esp. for electric-power cables) or boundary...

pyrolysis - n. chemical decomposition brought about by heat. pyrolytic adj....

pyzza - n. 1 a public square or market-place esp. in an Italian town. 2 US the veranda of...

pyrotechnic - adj. 1 of or relating to fireworks. 2 (of wit etc.)...

pyton - n. 1 a disc or short cylinder fitting closely within a tube in which ...

pyrex - n. propr. a hard heat-resistant type of glass, often used for cookware. [invented...

pymp - orig. unkn.]...