addition

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Related to addend: augend, subtrahend

addition

Etymology: L, additio, something added
a chemical reaction in which two complete molecules combine to form a new product, usually by attachment to carbon atoms at a double or triple bond of one of the molecules.

addition

(ă-di′shŏn) [L. addere, to add]
In chemistry, a reaction in which two substances unite without loss of atoms or valence.
References in periodicals archive ?
The most important studies in this domain demonstrated that adults' RTs are best fit by the product of the two addends.
TABLE 1 Addend Combinations Condition First Card Second Card A (2 dot cards) .
For subtraction, counting involved the missing addend strategy: Count from the subtrahend to the minuend.
where q is a proportionality factor not dependent on j; it has been defined according to the second equation to eliminate the second constant addend of eq (7,6).
6 = 4 + 2 and 4 = 3 + 1, so 6 = [(3 + 1) + 2)], and number families with missing addend (e.
For example, in a lesson on finding the sum of three 2-digit addends, the error alert in HC noted that, "students may group two addends to make a ten and then forget the third addend" (Maletsky et al.
the effect of changing the addend for 246+199), and to less extent for Jane, but lack of understanding for Emma was reflected in her inability to apply the principles in mental computation.
Expenses (costs) and any refunds (paid for PPK) are added as a positive addend this.
The first addend is clearly the non-relativistic component l[?
The last addend results because v/[delta]x has physical dimensions of a frequency [omega], so that [delta]v/[delta]x = [[omega].
Qualitative decompose and recompose the parts rule: In comparing a+b and c+d, if an addend in one expression was less than an addend in the other expression, whereas the reverse relationship held for the remaining two addends, then the expressions were judged equal (i.
The first addend in each task was held constant; the second addend increased by 1 (e.