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: revolutionize to rhenium.
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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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Rezulin (trademark)
Rf (element)
Rg (symbol)
Rh (symbol)
Rh factor (in anatomy, biology)
Rh-negative (Lacking an Rh factor)
Rh-positive (Rh factor)
Rhadamanthine (Strictly)
Rhadamanthus (in Greek Mythology)
Rhaeto-Romance (group of three Romance dialects)
rhea (bird)
Rhea (in mythology)
Rhenish (Rhine River or the lands)
rhenium (metal, element)