What does "protactic" mean?
Protactic: Giving a previous narrative or explanation, as of the plot or personages of a play; introductory. = 32,500 yrs.) Also called brevium, Uranium X2 and UX2.
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17T00:00:00-07:00 · Modified: 2026-07-17T00:00:00-07:00