For Second we have terms and definitions in 10 topics. The topics are Boxing, Climbing, Congressional, Curling, Etymology, Explosives, Public Speaking, Trigonometry, Watch and Watches.

Second (Boxing)

A person other than the coach who stands in a boxer's corner and gives him advice and assistance between rounds.

Second (Climbing)

A climber who follows the lead, or first, climber.

Second (Congressional)

The number of members required to indicate support for an actions, such as calling for a vote.

Second (Curling)

The player who delivers stones second for his or her team in an end.

Second (Etymology)

The OED says: Fr. seconde, ad. med.L. secunda, fem. of L. secundus second a., used ellipt. for secunda minuta, lit. `second minute', i.e. the result of the second operation of sexagesimal division; the result of the first such operation (now called `minute' simply) being the `first' or `prime minute' or `prime'.

Second (Explosives)

Second (sec or s), fundamental unit of time in all systems of measurement. In practical terms, the second is 1/60 of a minute and 1/3,600 of an hour. Since 1967 it has been calculated by atomic standards to be 9,192,631,770 periods of vibration of the radiation emitted at a specific wavelength by a cesium-133 atom.

Second (Public Speaking)

A motion must receive a "second" before group discussion can proceed. Assures that more than one member wishes to have the motion considered.

Second (Trigonometry)

An angle measurement equal to 1/60 of a minute.

Second (Watch)

Basic unit of time (abbr. s or sec), corresponding to one 86,000th part of the mean solar day, i.e. the duration of rotation, about its own axis, of an ideal Earth describing a circle round the Sun in one year, at a constant speed and in the plane of the Equator. After the Second World War, atomic clocks became so accurate that they could demonstrate the infinitesimal irregularities (a few hundreths of a second per year) of the Earth's rotation about its own axis. It was then decided to redefine the reference standard; this was done by the 13th General Conference on Weights and Measures in 1967, in the following terms: "The second is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the fundamental state of the atom of caesium 133". Conventionally, the second is subdivised into tenths, hundredths, thousendths (milliseconds), millionths (microseconds), thousand-millionths (nanoseconds) and billionths (picoseconds).

Second (Watches)

Basic unit of time (abbr. s or sec), corresponding to one 86,000th part of the mean solar day, i.e. the duration of rotation, about its own axis, of an ideal Earth describing a circle round the Sun in one year, at a constant speed and in the plane of the Equator. After the Second World War, atomic clocks became so accurate that they could demonstrate the infinitesimal irregularities (a few hundreths of a second per year) of the Earth's rotation about its own axis. It was then decided to redefine the reference standard; this was done by the 13th General Conference on Weights and Measures in 1967, in the following terms: "The second is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the fundamental state of the atom of caesium 133". Conventionally, the second is subdivised into tenths, hundredths, thousendths (milliseconds), millionths (microseconds), thousand-millionths (nanoseconds) and billionths (picoseconds).

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