[ jĕn′ər-ə-tĭv ]
A cell of the male gametophyte (pollen grain) of seed plants that divides to give rise directly or indirectly to sperm. See more at pollination.
sleeper cellRead more in this article about some frequently asked questions and fun facts related to our definitions.
Who Invented The Crossword?Arthur Wynne is usually credited with inventing the crossword. His first puzzle, called a word-cross, was published in December 1913 in the New York World. But there may have been other predecessors to the crossword: in England in the 19th century and an Italian version called per passare il tempo, which means “to pass the time.” Word crosses eventually became known as crosswords, and their creators …
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