Calender or Calendar ?

I received this email. It’s obviously an advertisement for some commercial product; however, it makes an interesting study in what is happening to our language as a result of our recent “txt msg 4 u” influences.

To: Webmaster

Name: xxxxxxxxxxx


Subject: Misspelled Word Message:

I thought you would like to know, it looks like you’ve misspelled the word “calender” on your website. Silly mistakes can ruin your site’s credibility. In the past I’ve used a tool like xxxxxxxxx to keep mistakes off my website.

Here is what Wikipedia has to say about the spelling:


From Wikipedia, the free encyclopedia
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A calendar is a system of organizing days for social, religious, commercial or administrative purposes. This is done by giving names to periods of time, typically days, weeks, months and years. A date is the designation of a single, specific day within such a system. A calendar is also a physical record (often paper) of such a system. A calendar can also mean a list of planned events, such as a court calendar or a partly or fully chronological list of documents, such as a calendar of wills.

Periods in a calendar (such as years and months) are usually, though not necessarily, synchronised with the cycle of the sun or the moon. The most common type of pre-modern calendar was the lunisolar calendar, a lunar calendar that occasionally adds one intercalary month to remain synchronised with the solar year over the long term.

The term calendar is taken from calendae, the term for the first day of the month in the Roman calendar, related to the verb calare “to call out”, referring to the “calling” of the new moon when it was first seen.[1] Latin calendarium meant “account book, register” (as accounts were settled and debts were collected on the calends of each month). The Latin term was adopted in Old French as calendier and from there in Middle English as calender by the 13th century (the spelling calendar is early modern).



From Wikipedia, the free encyclopedia

Calender process

Old calender machine

Threading paper through calender rolls, 1941

Calender rolls for milling and mixing rubber

Calender machine for electrode pressing in Lithium-ion battery manufacturing

A calender is a series of hard pressure rollers used to finish or smooth a sheet of material such as paper, textiles, or plastics. Calender rolls are also used to form some types of plastic films and to apply coatings.[1] Some calender rolls are heated or cooled as needed.[2] Calenders are sometimes spelled calendars.


The word “calender” itself is a derivation of the word κύλινδρος kylindros, the Greek word that is also the source of the word “cylinder”.[3]


In 1836, Edwin M. Chaffee, of the Roxbury India Rubber Company, patented a four-roll calender to make rubber sheet.[4] Chaffee worked with Charles Goodyear with the intention to “produce a sheet of rubber laminated to a fabric base”.[5] Calenders were also used for paper and fabrics long before later applications for thermoplastics. With the expansion of the rubber industry the design of calenders grew as well, so when PVC was introduced the machinery was already capable of processing it into film.[5] As recorded in an overview on the history of the development of calenders, “There was development in both Germany and the United States and probably the first successful calendering of PVC was in 1935 in Germany, where in the previous year the Hermann Berstorff Company of Hannover designed the first calender specifically to process this plastic”.[5]

In the past, for paper, sheets were worked on with a polished hammer or pressed between polished metal sheets in a press. With the continuously operating paper machine it became part of the process of rolling the paper (in this case also called web paper). The pressure between the rollers, the “nip pressure”, can be reduced by heating the rolls or moistening the paper surface. This helps to keep the bulk and the stiffness of the web paper which is beneficial for its later use.

Modern calenders have “hard” heated rollers made from chilled cast iron or steel, and “soft” rollers coated with polymeric composites. The soft roller is slightly non-cylindrical, tapered in diameter toward both ends, to widen the working nip and distribute the specific pressure on the paper more evenly. [end of copy]


I think I’ll pass on the recommended “correction” and the product it advertises.