> as lemmas
multiphoton
multiphoton adj. 
/ˌməlˌtaɪˈfoʊˌtɑn/, /ˌməltəˈfoʊˌtɑn/ Physics involving more than one photon.
Brit. /ˌmʌltɪˈfəʊtɒn/
, /ˌmʌltɪˈfəʊtɒn/U.S. /ˌməltiˈfoʊˌtɑn/
, /ˌməltiˈfoʊˌtɑn//ˌməlˌtaɪˈfoʊˌtɑn//ˌməltəˈfoʊˌtɑn/ΚΠ
1965 Science 22 Jan. 385/1 General areas of discussion will be non-linear phenomena..; multiphoton absorption; breakdown in gases..[etc.].
1998 Proc. National Acad. Sci. U.S.A. 95 3364/2 Higher collision energies and infrared multiphoton dissociation..produced no other identifiable fragments.
<
as lemmas