actinochemistry

[ak-tin-oh-kem-uh-stree, ak-tuh-noh-]

ac·tin·o·chem·is·try

[ak-tin-oh-kem-uh-stree, ak-tuh-noh-]
noun
the branch of chemistry dealing with actinism; photochemistry.

Origin:
1835–45; actino- + chemistry

ac·tin·o·chem·i·cal [ak-tin-oh-kem-i-kuhl, ak-tuh-noh-] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Actinochemistry has a plethora of syllables.
So is cyclotrimethylenetrinitramine. Does it mean:
a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells.
(used as a nonsense word by children to express approval or to represent the longest word in English.)
Collins
World English Dictionary
actinochemistry (ækˌtɪnəʊˈkɛmɪstrɪ)
 
n
another name for photochemistry

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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