(mathematical analysis, dated or historical) Ricci calculus; the rules of index notation and manipulation for tensors and tensor fields, as developed by Gregorio Ricci-Curbastro.

(law, England & Wales, formal, misleading) An estate in land held for a term of years of either a specified length or on a periodic basis, and which is not a term of years determinable (though may be determinable for other reasons); a leasehold estate in land.

(number theory, field theory) A norm for the rational numbers, with some prime number p as parameter, such that any rational number of the form pᵏ(a/b) — where a, b and k are integers and a, b and p are coprime — is mapped to the rational number p⁻ᵏ and 0 is mapped to 0. (Note: any nonzero rational number can be reduced to such a form.)

plural of p-adic absolute value

Infertility caused by the absence of a uterus.

(law, England & Wales, formal, idiomatic) The unqualified and unrestricted ownership of an estate in land; freehold tenure.