American Heritage Dictionary
Century Dictionary
(3)
GNU Webster's 1913
(2)
WordNet
(1)
Elsewhere on the web
• White et al demonstrate how we can understand social structure as the intercalation of roles, without the a priori logical categories.— Recently Uploaded Slideshows
May additional na typewritten intercalation o pagdadagdag ng buwan diumano sa huling bahagi ng kontrata para palabasin na si Gabby ay humarap sa notary public sa Pilipinas at nag-attest sa nasabing kontrata.— Blogged!
Thus, ParaHox clustering might have arisen secondarily in the chordates by intercalation of XLOX between GSX and CDX.— PLoS ONE Alerts: New Articles
They made use of no intercalation, and by losing a fourth of a day every year, the commencement of the year went back one day in every period of four years, and consequently made a revolution of the seasons in 1461 years.— Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"
According to the Gregorian rule of intercalation, therefore, every year of which the number is divisible by four without a remainder is a leap year, excepting the centurial years, which are only leap years when divisible by four after omitting the two ciphers.— Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"

Century Dictionary (1)
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