Tænia Rationis
. Show of argument. Argument which seems prima facie plausible and specious, but has no real depth or value.
“Mr. Spencer is again afflicted with his old complaint tœnia rationis, and takes big words for real things.”—Era Olla: Mr. Spencer’s First Principles.
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Entry taken from
Dictionary of Phrase and Fable,
edited by the Rev. E. Cobham Brewer, LL.D. and revised in 1895.