Fluidal structure

(Geol.) the structure characteristic of certain volcanic rocks in which the arrangement of the minute crystals shows the lines of flow of thew molten material before solidification; - also called fluxion structure.

See also: Fluidal

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Marked fluidal structures could be observed in the glass material.