The use of the word "faith"

I stand by my use of the word "faith" and don't think the phrase "faith in science" is the correct usage of the word. Note that, "faith" has exclusive religious connotation and is characterised by a strong conviction without proof. Unless someone tells me that faith is trust (c.1250 definition), I would rather stick to words like "belief" and "trust" when taking the stand that science has the potential to solve some of the world's problems.

faith
c.1250, "duty of fulfilling one's trust," from O.Fr. feid, from L. fides "trust, belief," from root of fidere "to trust," from PIE base *bhidh-/*bhoidh- (cf. Gk. pistis; see bid). For sense evolution, see belief. Theological sense is from 1382; religions called faiths since c.1300. Faith-healer is from 1885.
http://www.etymonline.com/index.php?term=faith


2 a (1): belief and trust in and loyalty to God (2): belief in the traditional doctrines of a religion b (1): firm belief in something for which there is no proof (2): complete trust3: something that is believed especially with strong conviction; especially : a system of religious beliefs

http://webster.com/dictionary/faith