English Reference

Word

bases

/ˈbeɪsəz/

Definitions

01foundations or bottom parts

A2 · Elementary Countable noun

n. the bottom parts of objects that support them.

n. the lowest or supporting parts of physical structures.

“The lamp bases were made of heavy marble to keep them from tipping over.”

“The architect insisted that the column bases be reinforced with steel to withstand the weight of the new mezzanine level.”

Antonyms

02military or operations centres

B1 · Intermediate Countable noun

n. places where a military or business does its main work.

n. centres of operations or headquarters, particularly in a military or logistical context.

“The army has several bases located near the border.”

“The corporation established regional bases across Southeast Asia to streamline their distribution network and reduce shipping costs.”

03starting points for ideas

B2 · Upper Intermediate Countable noun

n. the plural of 'basis'; the main ideas or facts that something is built on.

n. the plural of 'basis'; the underlying principles, facts, or foundations from which a system or idea is developed.

“The two theories have very different scientific bases.”

“The legal team argued that the two cases rested on entirely different constitutional bases, necessitating separate trials.”

04baseball

B1 · Intermediate Countable noun Sports American English

n. the four stations a player must run to in a game of baseball.

n. the four stations on a baseball field that a runner must touch in order to score a run.

“The runner managed to steal two bases during the second inning.”

“With the bases loaded and two outs, the pressure on the pitcher to deliver a strike was immense.”

05to use as a foundation

A2 · Elementary

v. to use a particular place or idea as a starting point.

v. the third-person singular present form of 'base'; to use something as a foundation or starting point for an activity or idea.

“She bases her entire argument on the latest research.”

“The company bases its marketing strategy on consumer data collected over the last five years.”

Usage

often used with the preposition 'on'

Etymology

See the etymology of the corresponding lemma form.

Borrowed from Latin basēs pl. See basis.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Idioms

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.A2 KeyIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.3.0–4.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 2.0–2.524–43TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.225–549
Frequency
Common
Level
A2 · Elementary
Updated

QR code

englishreference.com/q/bases

English Reference