(transitive) To cause to become numb (physically or emotionally). / (transitive) To cause (a feeling) to be less intense. / (transitive) To cause (the mind, faculties, etc.) to be less acute.

A minor distinction. / Subtlety or fine detail.

(transitive) To apply a nuance to; to change or redefine in a subtle way.

A non-existent or empty value or set of values. / Zero quantity of expressions; nothing. / Something that has no force or meaning.

Having no validity; "null and void". / Insignificant. / Absent or non-existent. / (mathematics) Of the null set. / (mathematics) Of or comprising a value of precisely zero.

(transitive, archaic) To nullify; to annul. / To return to the null position, setting, etc. / To form nulls, or into nulls, as in a lathe.

(physics, chemistry) The number of protons in an atom. Symbol: Z

The core, central part of something, around which other elements are assembled. / An initial part or version that will receive additions.

(arithmetic) Any of the ten symbols 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 used to represent numbers.

A proton (uud) or a neutron (udd).