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

plural of intercalator

(chemistry) Any molecule that intercalates, or is inserted, between two others

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

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.

(chemistry) That intercalates

simple past tense and past participle of intercalate

(geology) interleaved, formed in distinctly alternating layers.

present participle of intercalate