---
type: "concept"
title: "Second-countable space"
slug: "second-countable-space"
language: "en"
translationGroupId: "cms31bd3x000dqe01t64nijjo"
domain: "General topology"
status: "stub"
aliases: []
lastEditedBy: "ancient-tree"
---

A second-countable space is a [[Topological space|topological space]] whose topology has a [[Countable set|countable]] [[Base of a topology|base]].