00More optionsShareSaveReportVideo vocabularyNo vocabulary matches your filterseraUS /'ɪrə/・UK /'ɪərə/NounPeriod characterized by particular events, peopleA major division of geological time, usually divided into periods.B1More hayUS /he/・UK /heɪ/Uncountable NounDry grass used as food for animalsB1More soyUS /sɔɪ/・UK /sɔɪ/NounFood substance made from soya beansC2More finUS /fɪn/・UK /fɪn/NounFlat, thin body parts of a fish that help it swimFlat, thin object that sticks out from somethingB2More Use EnergyUnlock All VocabularyUnlock pronunciation, explanations, and filtersUnlock