A FREE English Dictionary Database from

You can check the meaning of one word, or a whole page.

Enter your query in the search box, or choose a letter from the menu below.

Try our SpellChecker here, or our English Thesaurus here.

 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
 Exact Word  Within Words  Within Descriptions
Hemihedral (a.) Having half of the similar parts of a crystals, instead of all; consisting of half the planes which full symmetry would require, as when a cube has planes only on half of its eight solid angles, or one plane out of a pair on each of its edges; or as in the case of a tetrahedron, which is hemihedral to an octahedron, it being contained under four of the planes of an octahedron.