ac·​ri·​din·​i·​um | \ˌa-krə-ˈdi-nē-əm\
variants: or less commonly acridonium \ ˌa-​krə-​ˈdō-​nē-​əm \
plural -s

Definition of acridinium 

: a univalent radical C13H10N analogous to ammonium derived from acridine

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First Known Use of acridinium

1884, in the meaning defined above

History and Etymology for acridinium

acridinium, New Latin, from International Scientific Vocabulary acridine + New Latin -ium; acridonium, New Latin, from International Scientific Vocabulary acridone + New Latin -ium

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The first known use of acridinium was in 1884

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by force of circumstances

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