IE = Indo-European; other sources are spelled out.
A question mark (?) indicates that the term may or may not be from the given root. Within a given entry, question-marked items may be clearly related to each other, but there can be doubt about whether that entire group of related words is from the given root. For example, cone, conic, conical, conicoid, and conoid are all related to each other, but may not be from the Indo-European root ko-[102] under which they are listed.
[1] ad- (IE) “to, at, near”: abridged, accelerate, acceleration, accrue, accumulate, accumulation, accuracy, accurate, ad-, add, addend, addition, additive, adherent, adjacent, adjoin, adjoint, adjugate, admissible, affine, aggregation, alligation, amortization, amortize, amount, annihilate, annihilator, applied, appreciate, appreciation, approach, approximate, approximation, arbitrary (?), arrange, array, ascending, associative, associativity, assume, assumption, attractor, reductio ad absurdum, subadditive, superadditive.
[2] œqu- (Latin) “even, level”: equal, equation, equant, equator, equiangular, equiareal, equiconjugate, equidistant, equilateral, equilibrium, equimultiple, equipollent, equipotent, equivalence, equivalent, inequality.
[3] ag- (IE) “drive”: actuarial, actuary, ambiguous, axiom, axiomatic, exact, strategy.
[4] ak- (IE) “sharp”: acnode, acute, edge.
[5] aks- (IE) “axis”: axial, axis, axonometric, axonometry, coaxial, triaxial.
[6] al- (IE) “beyond”: aliquot, allometric, alternate, alternating, alternation, anallagmatic, antiparallel, parallel, parallelepiped, parallelepipedal, parallelogram, parallelotope, subalternate, ultrafilter.
[7] aleph (Hebrew) “ox; first letter of the alphabet”: aleph, alpha, alphametic, pentalpha.
[8] all (English) “all”: all, almost.
[9] ambhi (IE) “around”: ambiguous, amphicheiral, because, belong, between.
[10] an (IE) “on”: analogy, analysis, analytic, analyticity, analyze, anharmonic, ANOVA, on, onto, unless.
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