Reading Theme:
Relay Definition, Usage & Common Examples (2 meaning)
Meaning 1：team race (relay)
relay
/ˈriːleɪ/
n.
A race between teams where each team member does part of the distance, and the next person continues after being passed something (like a baton).
team race
➕
/tiːm reɪs/
n.
A type of race run by teams where each member completes a portion of the total distance, passing a baton to the next runner to continue.
📘 Details & Usage
📖 Root Explanation
From French 'relayer' (to change horses, relieve), from 're-' (again) + 'laier' (to leave), ultimately from Latin 'relaxare' (to loosen).
💡 Mnemonic
A relay **relays** something: a baton in a race or a signal in technology.
📖 Example
The most exciting moment at the school sports day is always the 4x100 meters relay, where teamwork is everything.
The most exciting moment at the school sports day is always the 4x100 meters team race, where teamwork is everything.
🔗 Collocations
relay race – the competitive event itself
relay team – the group of athletes participating
relay baton – the object passed between runners
🔄 Synonyms
relay race (n.) – The full term for the sporting event.
team race (n.) – A broader term for any race contested by teams.
shuttle (n.) – Sometimes used for a relay format where runners go back and forth over the same short distance.
🚫 Antonyms
individual race (n.) – A race where participants compete alone, not as part of a team.
🌱 Derivatives
relayer (n.) – A participant in a relay race.
📖 Cultural Story
Historically, a 'relay' referred to a fresh set of horses stationed along a route to replace tired ones, enabling continuous travel. This concept was adopted for telegraph and later radio systems, where signals are received and passed on to extend their range.
Meaning 2：signal booster (relay)
relay
/ˈriːleɪ/
n.
A device that receives a signal (like TV or radio) and then sends it out again, often stronger, to reach further places.
signal booster
➕
/ˈsɪɡnəl buːstər/
n.
An electrical or electronic device that receives a weak signal and retransmits it at a higher power or to a different location, thereby extending its range.
📘 Details & Usage
📖 Example
We bought a Wi-Fi relay to boost the internet signal in the bedroom at the back of the house.
We bought a Wi-Fi signal booster to strengthen the internet signal in the bedroom at the back of the house.
🔗 Collocations
relay station – a facility equipped to receive and retransmit signals
satellite relay – a satellite that performs this function for communications
electromagnetic relay – a switch operated by an electromagnet
🔄 Synonyms
🚫 Antonyms
dead zone (n.) – An area where signals cannot be received.
🌱 Derivatives
relaying (n.) – The process of passing on or retransmitting a signal.
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