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tritocerebrum
tritocerebrum n. 
/ˌtrɪtə(ʊ)ˈsɛrᵻbr(ə)m/, /ˌtrʌɪtə(ʊ)sᵻˈriːbr(ə)m/, /ˌtrʌɪtə(ʊ)ˈsɛrᵻbr(ə)m/, /ˌtraɪdoʊˈsɛrəbrəm/ (erroneoustritocerebron) = tritencephalon n. [ < scientific Latin tritocerebron (Viallanes, 1884) < trito- trito- comb. form + classical Latin cerebrum brain (see cerebrum n.).]
Brit. /ˌtrɪtə(ʊ)sᵻˈriːbr(ə)m/
, /ˌtrɪtə(ʊ)sᵻˈriːbr(ə)m//ˌtrɪtə(ʊ)ˈsɛrᵻbr(ə)m//ˌtrʌɪtə(ʊ)sᵻˈriːbr(ə)m//ˌtrʌɪtə(ʊ)ˈsɛrᵻbr(ə)m/U.S. /ˌtraɪdoʊsəˈribrəm/
, /ˌtraɪdoʊsəˈribrəm//ˌtraɪdoʊˈsɛrəbrəm/ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > compound brain > hindmost segment of
tritocerebrum1898
tritencephalon1910
1898 A. S. Packard Text-bk. Entomol. 231 Viallanes first..divided the brain of adult insects into three regions or segments; i.e. the ‘protocerebron’, ‘deutocerebron’, and ‘tritocerebron’.
1898 A. S. Packard Text-bk. Entomol. 237 The œsophageal lobes (Tritocerebrum).
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