12-Letter Words Containing: P,O,R,O,S,E,S

• a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun

• an instrument that indicates whether two periodic motions are synchronous (especially an instrument that enables a pilot to synchronize the propellers of a plane that has two or more engines)

• to exhibit phosphorescence

• the use of spectroscopes to analyze spectra

• A deceptive, irregular, or false form; specifically:

• the intensely luminous surface of a star (especially the sun)

• an act so striking or impressive that the show must be delayed until the audience quiets down

• something that is strikingly attractive or has great popular appeal