Also called fixed investment trust, fixed trust.an investment company that has a fixed portfolio of securities, usually of a single type, such as municipal bonds or corporate bonds, which are held to maturity: each investor receives a share in the amount proportionate to his or her holding.
2.
Also called u⋅ni⋅trust /ˈyunɪˌtrʌst/Show Spelled Pronunciation[yoo-ni-truhst]Show IPA.an inflexible type of mutual fund in which each investor is obligated to invest a total specified amount in a certain number of shares, payable in equal amounts on a monthly or quarterly basis over an extended period of time.
[yoo-ni-truhst] 
. an inflexible type of mutual fund in which each investor is obligated to invest a total specified amount in a certain number of shares, payable in equal amounts on a monthly or quarterly basis over an extended period of time.
nɪˌtrʌst