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Fear of circles and circular structure. Circulaphobia

Fear of 2 sided shapes(cresents and semi-circles). Duesanerexaphobia

Fear of irregular nonagons (a shape that has 9 sides but the side aren't in equal length). Dwaniphobia

Fear of dodecahedrons. Edrophobia

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Psychology term of the day

July 26th 2021

Eisoptrophobia

The English suffixes -phobia, -phobic, -phobe (from Greek φόβος phobos, "fear") occur in technical usage in psychiatry to construct words that describe irrational, abnormal, unwarranted, persistent, or disabling fear as a mental disorder (e. g. agoraphobia), in chemistry to describe chemical aversions (e.