n. A voltage level with the opposite logical sense to the given one.n. A bit with the opposite value to the given one; the logical complement of a number.n. The diminished radix complement of a number; the nines' complement of a decimal number; the ones' complement of a binary number.n. The radix complement of a number; the two's complement of a binary number.n. The numeric complement of a number.n. A nucleotide sequence in which each base is replaced by the complementary base of the given sequence: adenine (A) by thymine (T) or uracil (U), cytosine (C) by guanine (G), and vice versa.n. Obsolete spelling of compliment.v. To complete, to bring to perfection, to make whole.v. To provide what the partner lacks and lack what the partner provides.v. To change a voltage, number, color, etc. to its complement.v. Obsolete form of compliment..