simple past tense and past participle of intercalate

(geology) interleaved, formed in distinctly alternating layers.

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

plural of intercalator

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

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.

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.

present participle of intercalate

(chemistry) That intercalates

Third-person singular simple present indicative form of intercalate