|1.||tide-generating force neap tide See also spring tide the cyclic rise and fall of sea level caused by the gravitational pull of the sun and moon. There are usually two high tides and two low tides in each lunar day|
|2.||the current, ebb, or flow of water at a specified place resulting from these changes in level: the tide is coming in|
|3.||ebb See flood|
|4.||a widespread tendency or movement: the tide of resentment against the government|
|5.||a critical point in time; turning point: the tide of his fortunes|
|6.||dialect (Northern English) a fair or holiday|
|7.||(in combination) a season or time: Christmastide|
|8.||rare any body of mobile water, such as a stream|
|9.||archaic a favourable opportunity|
|10.||to carry or be carried with or as if with the tide|
|11.||(intr) to ebb and flow like the tide|
|[Old English tīd time; related to Old High German zīt, Old Norse tīthr time]|
An alternate increase and decrease, as of levels of a substance in the blood or digestive tract.
tide [%PREMIUM_LINK%] (tīd) Pronunciation Key |
The regular rise and fall in the surface level of the Earth's oceans, seas, and bays caused by the gravitational attraction of the Moon and to a lesser extent of the Sun. The maximum high tides (or spring tides) occur when the Moon and Sun are directly aligned with Earth, so that their gravitational pull on Earth's waters is along the same line and is reinforced. The lowest high tides (or neap tides) occur when the Moon and Sun are at right angles to each other, so that their gravitational pull on Earth's waters originates from two different directions and is mitigated. Tides vary greatly by region and are influenced by sea-floor topography, storms, and water currents. See also ebb tide, flood tide, neap tide, spring tide.