fluidal

from The Century Dictionary.

• Of, pertaining to, or of the nature of a fluid.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Pertaining to a fluid, or to its flowing motion.
• adjective (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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Pertaining to a fluid, or to a flowing motion.