# transfer window

> English word · Noun

## Definitions
1. A period of time during which a spacecraft orbiting one celestial body can travel to a different body and enter orbit around it without excessive expenditure of fuel or reaction mass.
2. A period of time during the year in which soccer players may be bought or sold between professional clubs.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/transfer-window