A period inserted into a calendar as in a leap year. / (chemistry) The reversible insertion of a molecule between two others. / (geology) A layer introduced into a pre-existing sequence.

plural of intercalation

To insert an extra leap day into a calendar in order to maintain synchrony with natural phenomena. / To insert an extra month into a calendar for the same purpose. The Hebrew calendar has such a month.

Third-person singular simple present indicative form of intercalate

present participle of intercalate

(chemistry) That intercalates

simple past tense and past participle of intercalate

(geology) interleaved, formed in distinctly alternating layers.

plural of intercalator

That which intercalates / (biochemistry) Any of several classes of small molecule that insert themselves into the structure of DNA