Di*as"to*le (?), n. [L., fr. Gr. , fr. to put asunder, to separate; through + to set, to place.]

1. Physiol.

The rhythmical expansion or dilatation of the heart and arteries; -- correlative to systole, or contraction.

2. Gram.

A figure by which a syllable naturally short is made long.


© Webster 1913.

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