03:25 Nov 25, 2009 

Can you clarify if the meeting is only between two persons or if it is a face-to-face meeting (cara a cara) where actually it could be two or more persons. Face to face (cara a cara) simply means it is in the presence of a person or persons but not limited to two whereas a one-on-one meeting (una reunión uno-a-uno) is strictly between two persons.

01:37 Nov 25, 2009 

esta frase proviene de la frase usada en deporte- la idea es de que es algo personal porque es entre dos personas-- se acepta la frase 'Uno-a-Uno ' pero cualquier frase que de la idea es lo que importa para comunicar el mensaje
Adapted From: WordNet 2.0 Copyright 2003 by Princeton University. All rights reserved.

one-on-one
A adjective
1 one-on-one, man-to-man

being a system of play in which an individual defensive player guards an individual offensive player; "one-on-one defense"

2 one-on-one

directly between two individuals; "one-on-one instruction"

B adverb
1 one-on-one, person-to-person

(of two persons) in direct encounter; "preferred to settle the matter one-on-one"; "interviewed her person-to-person"

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Main Entry: one–on–one
Function: adjective
Language: English
: uno a uno

—one–on–one adverb