A physical base or foundation.
A starting point, base or foundation for an argument or hypothesis.
A regular frequency.
In a vector space, a linearly independent set of vectors spanning the whole vector space.
Amount paid for an investment, including commissions and other expenses.
An underlying condition or circumstance.
A collection of subsets ("basis elements") of a set, such that this collection covers the set, and for any two basis elements which both contain an element of the set, there is a third basis element contained in the intersection of the first two, which also contains that element.
The difference between the cash price a dealer pays to a farmer for his produce and an agreed reference price, which is usually the futures price at which the given crop is trading at a commodity exchange.
A pure substance.
A thing that is the most perfect example of its type; the most perfect embodiment of something; epitome, prototype.
The fifth alchemical element, or essence, after earth, air, fire, and water that fills the universe beyond the terrestrial sphere.
The essence of a thing in its purest and most concentrated form.
A hypothetical form of dark energy postulated to explain observations of an accelerating universe.
To reduce to its purest and most concentrated essence.