What is the meaning of Signum?
A medieval tower bell used particularly for ringing the eight canonical hours.
A function that extracts the sign of a real number x, yielding -1 if x is negative, +1 if x is positive, or 0 if x is zero.
visible indication: sign, mark, signal
miracle, miraculous work, sign
constellation; sign in the heavens, heavenly sign
signum (medieval tower bell used particularly for ringing the 8 canonical hours)
the cross of Jesus Christ & Christianity.
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