casual alien

noun

A plant that appears with no apparent human assistance but does not develop a sustained population.

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Meanings

nouncasual alien (plural casual aliens)

plural casual aliens

  1. biologyA plant that appears with no apparent human assistance but does not develop a sustained population.
Cite this entry
APA

casual alien. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/casual%20alien

MLA

“casual alien.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/casual%20alien. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “casual alien,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/casual%20alien.

Source: casual alien on Wiktionary, CC BY-SA 4.0.