- 1[transitive] filter something to pass liquid, light, etc. through a special device, especially to remove something that is not wanted All drinking water must be filtered. Use a sun block that filters UVA effectively. (figurative) My secretary is very good at filtering my calls (= making sure that calls that I do not want do not get through). see also filtration Wordfinderabsorb, condense, dilute, dissolve, evaporate, filter, immerse, liquid, rinse, saturated
- 2[transitive] filter something to use a special program to check the content of emails or websites before they are sent to your computer
- 3[intransitive] + adv./prep. (of people) to move slowly in a particular direction The doors opened and people started filtering through.
- 4[intransitive] + adv./prep. (of information, news, etc.) to slowly become known More details about the crash are filtering through.
- 5[intransitive] + adv./prep. (of light or sound) to come into a place slowly or in small amounts Sunlight filtered in through the curtains.
- 6[intransitive] (British English) (of traffic at traffic lights) to turn left at traffic lights while other vehicles wanting to go straight ahead or turn right must wait See related entries: Motoring problems and accidents Word Origin late Middle English (denoting a piece of felt): from French filtre, from medieval Latin filtrum
BrE BrE//ˈfɪltə(r)//; NAmE NAmE//ˈfɪltər//Verb Forms present simple I / you / we / they filter
BrE BrE//ˈfɪltə(r)//; NAmE NAmE//ˈfɪltər//he / she / it filters
BrE BrE//ˈfɪltəz//; NAmE NAmE//ˈfɪltərz//past simple filtered
BrE BrE//ˈfɪltəd//; NAmE NAmE//ˈfɪltərd//past participle filtered
BrE BrE//ˈfɪltəd//; NAmE NAmE//ˈfɪltərd//-ing form filtering
BrE BrE//ˈfɪltərɪŋ//; NAmE NAmE//ˈfɪltərɪŋ//Motoring problems and accidents