An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Of a number, not divisible by two.
A function such as f(x) with the property that f(-x) = - f(x) for any value of x; e.g. sin(x).

From M.E. odde, from O.N. oddi "odd (number)."

Tâq, related to tak "single, alone", from Mid.Pers. tak, tâg "single, alone," maybe related to tâi, tâ "unit, piece."

Nucleus which contains an odd number of protons and an even number of neutrons.

→ odd; → even; → nucleus.

Nucleus which contains an odd number of both protons and neutrons.

→ odd; → nucleus.