Etymology

guanine

G2U1A1N1I1N1E1

Today it means: A substance first obtained from guano; it is a nucleic base and pairs with cytosine in DNA and RNA (by means of three hydrogen bonds). Full definition →

English guano ← Spanish guano ← Quechua wan
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The story

  1. Quechuawan
  2. Spanishguano
  3. Englishguano
  4. English todayguanine

From guano + -ine. Guanine was named by the German chemist Julius Bodo Unger in 1846 who isolated it from guano.

Etymology from Wiktionary, CC BY-SA 4.0.