replacement

noun

re·​place·​ment ri-ˈplās-mənt 

1

: the action or process of replacing : the state of being replaced

2

: one that replaces another especially in a job or function

Synonyms of replacement

• substitute
• backup

Examples of replacement in a Sentence

We need a replacement for our old vacuum cleaner.

Where can we get replacement parts for the tractor?

Recent Examples on the Web

Plasma exchange involves blood being taken from a patient and the plasma removed and exchanged for a replacement fluid, usually donor plasma or another protein solution, according to the Cleveland Clinic. —Brie Stimson, FOXNews.com, 16 Jan. 2026

Crew-11 originally had been slated to depart the space station in mid-February, only after a replacement team — the Crew-12 astronauts — would have arrived to take over operations. —Jackie Wattles, CNN Money, 15 Jan. 2026

The club dismissed head coach Paul Simonis in November, having appointed him in the summer, with Daniel Bauer named his replacement. —David Ornstein, New York Times, 15 Jan. 2026

The company emphasized that robots are designed as collaborative partners rather than replacements, aiming to improve manufacturing quality, efficiency, and adaptability. —Jijo Malayil, Interesting Engineering, 15 Jan. 2026

Word History

First Known Use

1743, in the meaning defined at sense 1

Phrases Containing replacement

• estrogen replacement therapy
• hormone replacement therapy
• replacement set
• replacement therapy

Rhymes for replacement

• abasement
• debasement
• defacement
• displacement
• effacement
• emplacement
• encasement
• misplacement
• outplacement
• basement
• placement

Kids Definition

replacement

noun

re·​place·​ment ri-ˈplā-smənt 

1

: the act of replacing : the state of being replaced

2

: one that replaces another : substitute

Legal Definition

replacement

noun

re·​place·​ment

1

a

: the act of replacing : the state of being replaced

b

: an insurer's option under a policy to replace or repair damaged property rather than pay the insured for the loss

2

: something that replaces

specifically : a new fixed asset or portion of an asset that takes the place of one discarded (as because of deterioration)