transitive verb
Definition 1
Act towards, deal with.
Source: Invertext
Context: Ministers are preparing statutory regulations to improve the way banks treat their customers to toughen up existing voluntary codes of conduct.
Source: Financial Times 02/12/2008
Definition 2
Deal with person with a view to result, apply process to, subject to chemical agent etc.
Source: Concise Oxford Dictionary
Context: Doctors treated him for second-degree burns and released him the same day.
Source: www.safetycenter.navy.mil
Definition 3
Deal with thing with a view to result, apply process to, subject to chemical agent etc.
Source: Concise Oxford Dictionary
Context: The material, when treated with resin to become a composite, has many aerospace, industrial and sports applications.
Source: www.bizjournals.com