filter paper


: porous unsized paper used especially for filtering

Example Sentences

Recent Examples on the Web The tea filter bag is made of natural wood pulp filter paper, which is biodegradable and more environmentally friendly than standard tea bags. Adria Greenhauff, Better Homes & Gardens, 2 Nov. 2022 What’s more, the filter paper is effective at brewing tea. Adria Greenhauff, Better Homes & Gardens, 2 Nov. 2022 But the lab tests for newborn screenings generally don't use all of the half-dozen or so drops of blood collected on filter paper cards. Michelle Andrews, CBS News, 13 Sep. 2022 While still in the hospital, a child's heel is pricked within a day or two of birth and small spots of blood are collected on a filter paper card., 29 Apr. 2022 In 1963, Guthrie pioneered a simple test for detecting the genetic disorder phenylketonuria, commonly called PKU, using just a few drops of blood collected from a baby's heel and placed on filter paper. Mark Johnson,, 29 Apr. 2022 Working with her husband, who was also a chemist, Ms. Free figured out how to impregnate strips of filter paper with chemicals that turned blue when glucose was present. New York Times, 3 May 2021 Georgia Nester, a researcher from Curtin University in Perth, Australia, filtered over 2,000 liters of water onto filter papers. Devi Lockwood, New York Times, 14 Apr. 2020 Typically, researchers use pipettes to apply microliters of the protein solution to sample holders and blot away the excess with filter paper. Eric Hand, Science | AAAS, 23 Jan. 2020 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'filter paper.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1670, in the meaning defined above

Time Traveler
The first known use of filter paper was in 1670

Dictionary Entries Near filter paper

Cite this Entry

“Filter paper.” Dictionary, Merriam-Webster, Accessed 2 Dec. 2022.

Kids Definition

filter paper


: porous paper used especially for filtering

Medical Definition

filter paper


: porous unsized paper used especially for filtering
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
True or False

Test your knowledge - and maybe learn something along the way.

Universal Daily Crossword

A daily challenge for crossword fanatics.