411 REFERENCE · Wikipedia
18O
Reference material by Wikipedia contributors. This retains its source identity and is not 411 news reporting.
18O or variant, may refer to:
Oxygen 18 (18O), an isotope of oxygen with atomic mass number 18 (8 protons + 10 neutrons)
2019 Catalan general strike (18-O)
18º, a way to write the ordinal number 18th (eighteenth)
See also
18o 18-o
δ18O
18o
18-o
O-18 (disambiguation) and O18
18 (disambiguation)
O (disambiguation)
180 (one-eight-zero; 180)
I80 (disambiguation) (i-eight-zero; I80)
l80 (disambiguation) (L-eight-zero; l80)