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exoplanet a planet that orbits a star that is not our sun.
exorbitant exceeding the bounds of what is reasonable, fair, or proper; immoderate.
exorcise to expel (a demon or evil spirit). [2 definitions]
exorcism the process of expelling an evil spirit. [2 definitions]
exorcist one who drives out a demon or evil spirit.
exordium the introduction or beginning, esp. of a formal speech.
exoskeleton an external supporting structure such as the shell of a crustacean. (Cf. endoskeleton.)
exosphere the outermost, least dense portion of the atmosphere.
exothermic pertaining to a chemical reaction that results in the release of heat.
exotic having a foreign origin or character. [3 definitions]
exotic dancer a striptease dancer; stripper.
exp. abbreviation of "expenses." [3 definitions]
expand to make larger or more extensive. [5 definitions]
expandable combined form of expand.
expanded metal sheet metal that has been stamped or cut into a latticelike form and stretched, used to reinforce concrete.
expanse a wide and open area, as of landscape; that which is of wide extent. [2 definitions]
expansible capable of expanding or being expanded.
expansion the act or process of expanding, or the state of being expanded. [3 definitions]
expansion bolt a threaded metal rod or pin, usu. used in stone and concrete, that has an attachment that expands as it is screwed into a surface.
expansionism the policy of encroaching on other territories or countries for political or economic advantage.
expansive having the potential to expand. [4 definitions]