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an informal way of saying hello
an informal way of saying hello to someone and asking if they are well
the usual polite way of greeting someone when you meet them for the first time
used in formal situations as a polite way of greeting someone when you meet them for the first time
used for saying hello to someone in the morning/afternoon/evening. Used especially when addressing an audience
a more informal way of saying hello to someone in the morning/afternoon/evening
used for saying hello to someone you already know
used when you meet a close friend that you have not seen for a long time
This is the British English definition of hello. View American English definition of hello.
a part of an atom that moves around the nucleus (=centre) and has a negative electrical charge
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