(of a topological space) Such that, for any two of its points, there exist respective open sets containing each and not the other.

The twentieth letter of the English alphabet, called tee and written in the Latin script.

The ordinal number twentieth, derived from this letter of the English alphabet, called tee and written in the Latin script.

Initialism of American Telephone & Telegraph, a US telecommunications company.

Northern England form of the (most characteristic of Yorkshire, but also found in areas of Lancashire, Derbyshire and Nottinghamshire)

Apocopic form of to

Forms the past tense and/or past participle of some verbs (leapt, kept, dreamt, blest, etc.)

An excrescent ending appended to words suffixed with -s.

(no longer productive) Alternative form of -th

Verbs formed from nouns or adjectives (compare English -ate, -ize), frequently having a causative force, or modified from an existing verb into a frequentative verb (no longer productive)