(Tyneside, derogatory) A person who tries get something out of others for nothing in return.

plural of toucha

Capable of being touched; tangible or palpable.

In a touchable way or manner.

The quality of being touchable; tangibility.

The quality of being touchable.

(mathematics) Any member of a polynomial sequence of binomial type defined by T_n(x)=∑ₖ₌₀ⁿS(n,k)xᵏ=∑ₖ₌₀ⁿn atop kxᵏ, where S(n,k)=n atop kis a Stirling number of the second kind, i.e. the number of partitions of a set of size n into k disjoint non-empty subsets.

plural of Touchard polynomial