In (rec.radio.amateur.homebrew), Tim Wescott wrote:

Yes, it's pronounced "sink", and it's quite common in signal processing.
You define it as being the _limit_ of sin(x)/x as x - 0 because otherwise
it's undefined at zero, and all the mathematicians in the crowd will curse
at you for being yet another engineer who's treating math so casually.

That's not precisely true.

Some fraction of us mathematicians wander away, shaking our heads and
muttering "Engineers!" under our breaths.

--
The official state religion of France is Bureaucracy. They've replaced
the Trinity with the Triplicate.
-- David Richerby, in a place not to be named.