abbreviation (in the US)
Office of Science and Technology
ocean surface temperature
Optical Storage Technology Association
[oh stahr] /ˈoʊ ˌstɑr/ noun 1. a very hot, massive, blue star of spectral type O, having a surface temperature between 30,000 and 50,000 K and an absorption spectrum with few lines, though the Balmer series of hydrogen lines is present and lines of ionized helium are detectable.
[os-tee-uh l] /ˈɒs ti əl/ adjective 1. . /ˈɒstɪəl/ adjective 1. of or relating to bone or to the skeleton 2. composed of bone; osseous osteal os·te·al (ŏs’tē-əl) adj.
1. variant of before a vowel: osteitis.