circularity
UK[ˌsɜːkjəˈlærəti]US[ˌsɜːrkjəˈlærəti]
n
The fact of being shaped like a circle or moving in a circle.
n
The use of a statement or argument that has already been assumed to be true, making it invalid.
Morpheme Breakdown
circul
ar
ity
circul
circle
ar
adjective suffix
ity
noun suffix
Etymology
The word 'circularity' traces its lineage to the Latin circulus, a diminutive of circus (ring, circle), which itself originates from the Greek kirkos, likely related to the Proto-Indo-European root sker- meaning "to turn, bend". The adjective-forming suffix -ar was attached to create circular, meaning "of a circle". Finally, the abstract noun-forming suffix -ity was appended, shifting the meaning from a descriptive quality to the state or condition of being circular. This logical construction evolved to encompass not just physical roundness but also the figurative, logical sense of an argument that turns back on its starting point without progress.
Analysis
Structure: circul (circle) + ar (adjective suffix) + ity (noun suffix)
circul: From Latin circulus, meaning "small ring, circle". It is the root element conveying the core concept of roundness or a circular path.
ar: A Latin-derived suffix used to form adjectives (e.g., circular), indicating "of or pertaining to".
ity: A Latin-derived suffix (-itas) used to form abstract nouns indicating a state, condition, or quality.
Examples
The circularity of the ancient stone monument was perfectly engineered.
The philosopher pointed out the circularity in the argument, as the conclusion was merely a restatement of the premise.
There is a certain circularity to the seasons, with each year returning to its starting point.