adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   Such that its topology has a countable base, said of a topological space. not-comparable

Editorial Guides For "second-countable"

Fewer vs Less: The Practical Rule (and When to Bend It)

Use fewer and less correctly in everyday writing without sounding stiff.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.