hour

https://doi.org/10.1351/goldbook.H02866
Non-SI unit of time, \(\text{h} = 3600\ \text{s}\).
Sources:
Green Book, 2nd ed., p. 111 [Terms] [Book]
PAC, 1996, 68, 957. (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 976 [Terms] [Paper]