![filter_1 noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com filter_1 noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com](https://www.oxfordlearnersdictionaries.com/media/english/fullsize/l/lab/labor/laboratory_equipment.png)
filter_1 noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com
Avon Protection on Twitter: "What does ABEK P mean? Each letter refers to certain groups of gases that the filter protects against (see image for details). #AvonAnswers https://t.co/q2TeGI6JVW" / Twitter
![Hina Khan shares a no-makeup, no-filter selfie as she sends out a message of 'self love'; writes, 'To be beautiful means to accept your own self just the way you are' - Hina Khan shares a no-makeup, no-filter selfie as she sends out a message of 'self love'; writes, 'To be beautiful means to accept your own self just the way you are' -](https://static.toiimg.com/thumb/width-400,resizemode-4,msid-86580430/86580430.jpg)