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dot a small round mark on something, especially one that is printed: The letters “i” and “j” have dots over them. The island is a small green dot on the map. Periods and decimal points are often referred to as “dots,” especially when talking about computers: The file is called “my essay dot doc.”
These are the magnitudes of a → and b → , so the dot product takes into account how long vectors are. The final factor is cos. . ( θ) , where θ is the angle between a → and b → . This tells us the dot product has to do with direction. Specifically, when θ = 0 , the two vectors point in exactly the same direction.
dot B with A Dot your face with the cream. Word Origin Old English dott ‘head of a boil’. The word is recorded only once in Old English, then not until the late 16th cent., when it is found in the sense ‘a small lump or clot’, perhaps influenced by Dutch dot ‘a knot’.
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dot. From Longman Dictionary of Contemporary English dot1 /dɒt $ dɑːt/ S2 noun [ countable] 1 a small round mark or spot a pattern of dots 2 → on the dot 3 something that looks like a small spot because it is so far away The plane was just a dot on the horizon. 4 a short sound or flash of light used when sending messages by Morse code → ...
definition 2: a small mark made by or as if by a pointed end, as of a pencil or pen. She went back and put a dot over her "i." synonyms: mark, period. similar words: spot, tittle. definition 3: used to indicate the punctuation mark (.) when it is used in addresses on the World Wide Web.
Dot product. In mathematics, the dot product or scalar product [note 1] is an algebraic operation that takes two equal-length sequences of numbers (usually coordinate vectors ), and returns a single number. In Euclidean geometry, the dot product of the Cartesian coordinates of two vectors is widely used. It is often called the inner product (or ...
