invisible ink
(now chiefly biology, geology) An act of folding. / (now chiefly biology, geology) A fold or pleat.
Third-person singular simple present indicative form of vary
Initialism of neonatal onset multisystem inflammatory disease.
An ink, invisible on application or soon thereafter, that can later be rendered visible by some process, such as exposing it to heat. / An ink used in pranks that is visible at first but soon disappears.
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DiQt（ディクト）
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