
All right, how does the flow rate
in a pipe depend on its DIAMETER?
The Big Bang Theory Season 8, Episode 2

Won't work.
The DIAMETER of the tubing is insufficient.
The Big Bang Theory Season 2, Episode 22

A boulder has a DIAMETER
greater than 25.6 centimeters.
The Big Bang Theory Season 11, Episode 13

A handful of dry pasta
about an inch in DIAMETER...
The Big Bang Theory Season 2, Episode 9

You measured the DIAMETER of
his suspicious mole yesterday.
The Big Bang Theory Season 7, Episode 6