fi.xo
sm fixture, permanent appendage. • adj 1 fixed, firm. 2 stable, steadfast. 3 steady, constant. 4 settled, established, set. 5 determined, decided, determinate. 6 appointed, definitely termed (payment, price, etc.).7 unfadable, fadeless. estrelas fixas fixed stars. idéia fixa fixed idea. renda fixa sure income.

Fixed-term credit is a loan for a given period of time, which must be repaid within that period.
https://www.bettermoneyskills.com/AllAboutCredit.aspx?s=10

I believe the "fixed" in this context refers to the interest rate. A loan or mortgage with fixed interest, as opposed to VARIABLE RATE loans which fluctuate as the market does.

Pls. read more about this:

http://en.wikipedia.org/wiki/Fixed_interest
A fixed interest rate loan is a loan where the interest rate doesn't fluctuate during the fixed rate period of the loan. This allows the borrower to accurately predict their future payments. Variable rate loans, by contrast, are anchored to the prevailing discount rate.

A fixed interest rate is based on the lender's assumptions about the average discount rate over the fixed rate period. For example, when the discount rate is historically low, fixed rates are normally higher than variable rates because interest rates are more likely to rise during the fixed rate period. Conversely, when interest rates are historically high, lenders normally offer a discount to borrowers to fix their interest rate over time, as rates are more likely to fall during the fixed rate period.

Some fixed interest loans - particularly mortgages intended for the use of people with previous adverse credit - have an 'extended overhang', that is to say that once the initial fixed rate period is over, the person taking out the loan is tied into it for a further extended period at a higher interest rate before they are able to redeem it.

http://www.investopedia.com/terms/f/fixedinterestrate.asp

http://www.allbusiness.com/glossaries/fixed-rate-loan/495844...
fixed rate (loan)
type of loan in which the interest rate does not fluctuate with general market conditions. There are fixed rate mortgage (also known as conventional mortgage) and consumer installment loans, as well as fixed rate business loans. Fixed rate loans tend to have higher original interest rates than flexible rate loans such as an Adjustable Rate Mortgage (ARM) , because lenders are not protected against a rise in the cost of money when they make a fixed rate loan.

pelo que entendi , é abertura de linha crédito

http://74.125.47.132/search?q=cache:LRgptf8_FPcJ:www.sicoobd...


CLÁUSULA PRIMEIRA - A CREDFAZ abre ao(a) CREDITADO(A), e este(a) aceita, um crédito fixo de R$__________________(_______________________________________________________________________________________________________), cuja liberação se dará mediante depósito em sua conta corrente naCREDFAZ e, logo após, transferido para a conta corrente ou poupança, de sua titularidade, no Banco nº._________, Agência nº _____________, conta nº. _______________________.