Prefix
A prefix signifying under, below, beneath, and hence often, in an inferior position or degree, in an imperfect or partial state, as in subscribe, substruct, subserve, subject, subordinate, subacid, subastringent, subgranular, suborn. Sub- in Latin compounds often becomes sum- before m, sur before r, and regularly becomes suc-, suf-, sug-, and sup- before c, f, g, and p respectively. Before c, p, and t it sometimes takes form sus- (by the dropping of b from a collateral form, subs-).
A prefix denoting that the ingredient (of a compound) signified by the term to which it is prefixed,is present in only a small proportion, or less than the normal amount; as, subsulphide, suboxide, etc. Prefixed to the name of a salt it is equivalent to basic; as, subacetate or basic acetate.
Source: Webster's dictionaryPFOA has been detected in the blood of more than 98% of the general US population in the low and sub- parts per billion range, and levels are higher in chemical plant employees and surrounding subpopulations. Source: Internet
A good example is to have one for the main thing you are testing, then sub- blocks for the methods. Source: Internet
Phyllis Newman sub- stitutes for Miss Harris at the matinee per- formances (Shubert, 44th St., W. 246-5990. Source: Internet
Fiji is now catalogued with Sub- Saharan Africa because the vicious treatment afforded young girls and some young boys reflects what has been seen in such nations. Source: Internet
Here, sub- is opposed to super- or supra- in a sense related to volition and/or necessity. Source: Internet
The extreme unlikeliness of this event according to the laws of probability leads Guildenstern to suggest that they may be "within un-, sub- or supernatural forces". Source: Internet