noun
Usage: usually capitalized S&O
: a periodic seesaw fluctuation in sea-level atmospheric pressures over the southern Pacific and Indian oceans that is believed to be linked to El Niño and La Niña events
noun
Usage: usually capitalized S&O
: a periodic seesaw fluctuation in sea-level atmospheric pressures over the southern Pacific and Indian oceans that is believed to be linked to El Niño and La Niña events
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012