(algebra, ring theory) A ring R that has no nonzero nilpotent elements; equivalently, such that, for x ∈ R, x² = 0 implies x = 0.

(algebra, ring theory) An algebra over a reduced ring.

plural of reduced algebra

A scale used by surveyors for reducing chains and links to acres and rods.

plural of reducing scale

(linear algebra) Said of a matrix which has undergone row reduction; i.e., of a matrix which has a 1 as the leading entry of each one of its non-zero rows and which has zeroes as all the other entries of any column containing such a leading entry (of any non-zero row).

(US, education, often attributive) In Connecticut, the status of a school meeting certain racial diversity quotas.

(US) milk from which about half of the cream has been removed

(idiomatic, transitive, especially passive) To cause to cry.

(linear algebra) The form of a row-reduced matrix which is in row echelon form.