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piezo-optical
piezo-optical adj. 
/pɪˌɛtsəʊˈɒptᵻkl/, /pʌɪˌiːzəʊˈɒptᵻkl/, /ˌpʌɪᵻzəʊˈɒptᵻkl/, /piˌeɪtsoʊˈɑptək(ə)l/, /paɪˌizoʊˈɑptək(ə)l/, /ˌpizoʊˈɑptək(ə)l/ = photoelastic adj. Cf. piezo-optic adj.
Brit. /ˌpiːzəʊˈɒptᵻkl/
, /ˌpiːzəʊˈɒptᵻkl//pɪˌɛtsəʊˈɒptᵻkl//pʌɪˌiːzəʊˈɒptᵻkl//ˌpʌɪᵻzəʊˈɒptᵻkl/U.S. /piˌeɪzoʊˈɑptək(ə)l/
, /piˌeɪzoʊˈɑptək(ə)l//piˌeɪtsoʊˈɑptək(ə)l//paɪˌizoʊˈɑptək(ə)l//ˌpizoʊˈɑptək(ə)l/ΚΠ
1927 Proc. Royal Soc. A. 116 636 The experiments of Pockels consisted therefore of a determination of the piezo-optical effect due to pressure alone.
1996 Crystallogr. Rep. 41 1054 (title) Spatial distribution of the longitudinal and transverse piezooptical effect in lithium tantalate crystals.
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