The plural of tv is televisions. Because tv is the abbreviation of television, but tv itself does not have a plural form, the plural should be televisions.
Interpretation:
n. Television, television; television industry
Phrases:
digital television? digital television; digital television; Digital television; digital television
cable television? cable television; cable television system; cable television system
television program? television program; television broadcast program
Usage :
When television is interpreted as "television", it is used as an uncountable noun; when it is interpreted as "television", it is often used with set as a countable noun; it can also mean "programs broadcast on television" , used as an uncountable noun; it can also mean "TV station, television industry" and used as an uncountable noun.
Example:
The television audience aggregated 30 millions.