Definition of upstroke
: a stroke (as of a pen) made in an upward direction
Recent Examples of upstroke from the Web
A hydrodynamic analysis of the humpback's movements in the lab confirmed that both the upstroke and the downstroke of its flippers provide forward thrust.
Clip-ins are cycling shoes that connect to a bike's pedals via little metal or plastic cleats so that the rider can use leg power on the upstroke as well as the downstroke.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'upstroke.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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