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cissoid

Advanced (C1/C2)

IPA: /ˈsɪsɔɪd/

KK: /ˈsɪsɔɪd/

noun
Definition

A specific type of curve used in geometry, created by Diocles, that helps solve problems like dividing an angle into three equal parts and finding two geometric means between two lines.


Example

The mathematician studied the properties of the cissoid to understand its applications in geometry.


Conversation
Sloth A
Have you ever heard of the term cissoid?
Sloth B
Yeah, I think it's a type of curve, right?
Sloth A
Exactly! It was created by Diocles to solve some geometry problems.
Sloth B
That's interesting! I love how math has such unique concepts.
Root Explanation

Cissoid → It is formed from "cissus" (from Greek "kissus", meaning ivy) and "-oid" (meaning resembling or having the form of). The word "cissoid" refers to a curve that resembles the shape of ivy.

Memory Tip

Imagine a curve that 'resembles' ('-oid') the shape of 'ivy' ('cissus') — that's what cissoid means.

Visually Confused Words
rissoid
cirsoid
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