Dictionary

The American Heritage Dictionary of the English Language, 4th edition, published by Houghton Mifflin Company
The American Heritage Dictionary provides clear and precise definitions along with an authoritative guide to usage. You can also check a word's spelling, syllabification and etymology, and hear an audio pronunciation.
On this page: atheoretical to atomic weight.

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Title Index: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9
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athlete's foot (contagious fungal skin infection)
Ativan (trademark)
Atka mackerel (food fish)
Atlantean (Titan Atlas)
Atlantic (ocean)
Atlantic croaker (silvery food fish)
Atlantic salmon (species of salmon)
Atlantic Standard Time (Standard time)
Atlanticism (doctrine of cooperation among western European ...)
Atlantis (place)
atlas (in geography)
Atlas (in Greek mythology)
Atlas cedar (northern African evergreen tree)
atlatl (weapon)
Atli (king corresponding to the historical figure)
atmometer (instrument)
atmosphere (in meteorology)
atom (in chemistry, physics)
atom bomb (weapon)
atomic clock (measure, instrument)
atomic mass (in chemistry, physics)
atomic mass unit (in chemistry, physics)
atomic number (in chemistry)
atomic weight (in chemistry)