Noun
An upward stroke, especially the stroke, or line, made by a writing instrument when moving upward, or from the body of the writer, or a line corresponding to the part of a letter thus made.
Source: Webster's dictionaryWooten popularized the "double thump," in which the string is slapped twice, on the upstroke and a downstroke (for more information, see Classical Thump ). Source: Internet
The pigeon had particularly large breast muscles that indicate powerful flight ( musculus pectoralis major for downstroke and the smaller musculus supracoracoideus for upstroke). Source: Internet
In many English-speaking countries, however, the most common shape of a handwritten Arabic digit 1 is just a vertical stroke ; that is, it lacks the upstroke added in many other cultures. Source: Internet
The upstroke of the wings would have occurred when the animal cleared the ground followed by a rapid down-stroke to generate additional lift and complete the launch into the air. Source: Internet
They open very fast to depolarize the cell membrane potential, causing the upstroke of an action potential. Source: Internet
Where the 1 is written with a long upstroke, the number 7 has a horizontal stroke through the vertical line. Source: Internet