@MichaelHarvey definitely goes by both. ngrams.

It looks likely that you copied this from a dictionary. Please cite and quote it.

Meant to include timing, which makes it even more of a rounding error.

@Lumberjack Chronographing is basically never used

It's very informal so I'm not surprised it doesn't appear much in written literature.

@JoséHdz.Stgo. a hyphen. You can see the usage here. A hyphen us used for compound constructions like "em-dash," em-dash is for separating phrases—like this—and en-dash is mostly for number ranges (e.g. 1949–57).

In any case, using the hyphen is never wrong, and is required in some cases. I'd say when in doubt use the hyphen, and only omit it if you memorize words that don't need it or look it up.

Ha, yes. Just edged you out ;-)

FWIW, ngrams show the non-hyphenated forms of your two examples have become more common since about 1960. Interestingly, if you look at AmE and BrE individually, in BrE the split was more like 1920, and the AmE split was much more pronounced in 1960.

@FumbleFingers is that a British thing or a quirk of the OED? I don't have access to it, but most other places I've checked show many of the non constructions without the dash.

I'd say "Hawaiian" and I am from the US.

I agree dollop isn't ideal for "not very much" if you only have a few berries—though it would be reasonable for a a higher quantity—but as an American "a dash of cream" seems very wrong. You can add a dash of salt or a dash of bitters, but for cream you'd use a splash (if liquid), a dollop, or a dab (if whipped).

"artisanal mining" 1904

"Artisan: a person skilled in an applied art; a craftsperson." dictionary.com. Since when is it restricted to food products?