Crossword Genius

Cold greeting in foreign letter (3)

Ross

I believe the answer is:

chi

'foreign letter' is the definition.
(Greek letter)

'cold greeting' is the wordplay.
'cold' becomes 'c' (eg on taps).
'greeting' becomes 'hi' (hi is a kind of greeting).
'c'+'hi'='CHI'

'in' is the link.

(Other definitions for chi that I've seen before include "The life force, according to traditional Chinese medicine" , "Classical symbol" , "Greek letter; force in Chinese philosophy" , "character in Thessaloniki" , "foreign character" .)

I've seen this clue in The Times.
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