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trochoidal

Upper-Intermediate (B2)

IPA: /trəʊˈkɔɪdəl/

KK: /troʊˈkɔɪdəl/

adjective
Definition

Relating to a specific type of curve known as a trochoid, which is formed by the path traced by a point on a circle as it rolls along a straight line.


Example

The engineer designed a trochoidal gear system to improve efficiency.


Conversation
Sloth A
Have you ever seen a trochoidal pattern in nature?
Sloth B
I think I have, but I didn’t know that’s what it was called.
Sloth A
Yeah, they often appear in things like waves or the tracks of some gears.
Sloth B
That’s really cool! I’ll have to look for trochoidal shapes next time I’m out.

Synonyms & Antonyms
Synonyms
curvilinear
spiral
circular
Antonyms
linear
straight
flat
Root Explanation

Trochoidal → It is formed from "trochus" (from Greek "τροχός", meaning wheel) and the suffix "-oidal" (meaning resembling or having the shape of). The word "trochoidal" refers to something that resembles or has the shape of a wheel.

Memory Tip

Imagine a shape that looks like a wheel — 'trochus' means wheel, and '-oidal' indicates resemblance. This helps you remember that 'trochoidal' describes something that has a wheel-like shape.

Visually Confused Words
epitrochoidal
hypotrochoidal
urochordal
trancoidal
tracheidal
prochordal
conchoidal
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