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Topic: What does congruent mean?
Replies: 4   Last Post: Dec 30, 2004 5:15 PM

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Glen Woodburn

Posts: 1
Registered: 1/25/05
Re: What does congruent mean?
Posted: Dec 30, 2004 5:15 PM
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On Sat, 27 May 2000 13:46:42 -0400 (EDT), John Conway wrote:
>On Wed, 24 May 2000, Walter Whiteley wrote:
>> I don't have my book on the origns of math words,
>> but I believe the root meaning is 'throw together'.
> The verb "congruere" existed already in classical
>Latin with the meaning of "to come together, or agree",
>and the word "congruent" is still occasionally used in
>ordinary English with this meaning, which is congruent
>(!) with its geometrical one.
> However, it seems that nobody really understands
>the etymology of this word (after "con" which is the
>"together" part). It's obviously based on a lost
>Latin verb "gruere", but nobody knows what that could
>have meant, since the only other compound in which it
>appears is "ingruere", which meant "to rush or break
> John Conway

Actually, "gruere" comes from the latin word grui which means to be in
harmony with.

So congruent translates to mean together in harmony with

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