concern
noun
uk/kənˈsɜːn/ us [ C ] formal
a business or company:
Two of the country's largest steel concerns are considering cuts in production.
See also
going concern
[ U or C ]
the fact of feeling worried about something, or something that makes you worry:
concern about/over sth There was a lot of public concern over the new legislation.
Please raise any concerns regarding this decision with your manager.
concern
verb [ T ]
uk/kənˈsɜːn/ usto be important to someone, or to involve or affect someone:
Managers complained that they were spending too much time going to meetings that didn't actually concern them.
to worry someone:
If there are issues which concern you, discuss the matter with a specialist financial adviser.
(also be concerned with)
to be about a particular subject:
Our research is concerned with new forms of work organization.
To whom it may concern
COMMUNICATIONS
a phrase you write at the beginning of a formal or public letter when you do not know exactly who it should be sent to