A tiny round mark made by or as if by a pointed instrument; a spot. Such a mark used in orthography, as above an i. The basic unit of composition for an image produced by a device that prints text or graphics on paper: a resolution of 900 dots per inch. A tiny amount. In Morse and similar codes, the short sound or signal used in combination with the dash and silent intervals to represent letters, numbers, or punctuation. Mathematics A decimal point. A symbol (\u00b7) indicating multiplication, as in 2 \u00b7 4 = 8. Music A mark after a note indicating an increase in time value by half. Computers A period, as used as in URLs and email addresses, to separate strings of words, as in ww.hmhco.com. To mark with a dot. To form or make with dots. To cover with or as if with dots:"Campfires, like red, peculiar blossoms, dotted the night"(Stephen Crane).