add/drop multiplexer - only individual words found (there may be no translations for some thesaurus entries in the bilingual dictionary)

Photonics

[fəʊ'tɒnɪks, foʊ'tɑːn-] n

English thesaurus

Photonic [fəʊ'tɒnɪk, foʊ'tɑːnɪk] n