\ban ASCII word boundary
\d+a digit, repeated at least once
\.the literal . (4610 / 568 / 2E16)
\D*any character that's not a digit, repeated any number of times
Non-Capturing Group(?:\d(?!\.)[^.]*)* *repeats the group contents below any number of times:
\da digit
\.the literal . (4610 / 568 / 2E16)
Negated Character Class[^.]* *matches any number of characters outside the set below:
.the literal . (4610 / 568 / 2E16)
g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string