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spectro-microscopical
spectro-microscopical adj.
Brit. 
/ˌspɛktrəʊmʌɪkrəˈskɒpᵻkl/
, /ˌspɛktrəʊmʌɪkrəˈskɒpᵻkl/U.S. /ˌspɛktroʊˌmaɪkrəˈskɑpək(ə)l/
/ˌspɛktroʊˌmaɪkrəˈskɑpək(ə)l/Π
1885 tr. Behrens' Micros. in Bot. V. 139 The spectro-microscopical apparatus..has become an important instrument in the investigation of the coloring matter of plants.
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