The quantity that fills one beaker; the amount of liquid or substance that a beaker can hold.
From beaker (from Dutch 'beker' or Low German 'beker', ultimately from Greek 'bakcharis') combined with the suffix -ful. The compound emerged as beakers became standard measuring vessels.
Beakers became essential to science in the 1600s, and the word 'beakerful' shows how quickly a container becomes so useful that people invent a word for 'one beaker's worth'!
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