flowtop

F4L1O1W4T1O1P3
US/ˈfloʊtɑp/

noun

The solid crust on a moving lava flow.

Scrabble 15
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Meanings

nounflowtop (plural flowtops)

plural flowtops

  1. geographyThe solid crust on a moving lava flow.

    they formed as gas vented from fixed sources at depth, ripping continuous openings through the moving flowtop.

    2007 September 21, Jaeger et al., "Athabasca Valles, Mars: A Lava-Draped Channel System" in Science 317(5845), page 1710 http://www.sciencemag.org/cgi/content/full/317/5845/1709

Origin

From flow + top.

Full word history & related roots →
Cite this entry
APA

flowtop. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/flowtop

MLA

“flowtop.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/flowtop. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “flowtop,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/flowtop.

Source: flowtop on Wiktionary, CC BY-SA 4.0.