elementary
UK:
/ˌɛlɪmˈɛntəɹi/
US:
/ˌɛɫəˈmɛntɝɹi/, /ˌɛɫəˈmɛntɹi/, /ˌɛɫəˈmɛntʃɹi/
l. frumlegur, frum- (elementary substance)