大气压 Traditional form: 大氣壓 Pinyin (reading): dàqìyā Definitions: atmospheric pressure Characters: 大 - big, great, vast, high, deep 气 - air, gas; steam, vapor; anger 压 - press; oppress; crush; pressure Traditional characters: 大 - big, great, vast, high, deep 氣 - air, gas; steam, vapor; anger 壓 - press; oppress; crush; pressure