A chance or attempt to achieve what should have been done the first time, usually indicating success this time around. (See second-guess.)
The interval between two adjacent notes in a diatonic scale (either or both of them may be raised or lowered from the basic scale via any type of accidental).
One-sixtieth of a minute; the SI unit of time, defined as the duration of 9,192,631,770 periods of radiation corresponding to the transition between two hyperfine levels of caesium-133 in a ground state at a temperature of absolute zero and at rest.
A unit of angle equal to one-sixtieth of a minute of arc or one part in 3600 of a degree.
Appendix:Words used as placeholders to count seconds
Origin
From Middle English secunde, second, secound, secund, borrowed from Old French second, seond, from Latin secundus ("following, next in order"), from root of sequor, from Proto-Indo-European *sekʷ- ("to follow"). secundo. Displaced native twoth and partially displaced native other (from Old English ōþer).
From Middle English secunde, seconde, borrowed from Old French seconde, from Medieval Latin secunda, short for secunda pars minuta.
From Middle French seconder, from Latin secundō ("assist, make favorable").
Modern English dictionary
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