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semi-difference
semi-difference n. 
/ˈsɛmɪˌdɪf(ə)rn̩s/, /ˈsɛmiˌdɪf(ə)rəns/ half the difference between two quantities.
Brit. /ˈsɛmɪˌdɪf(ə)rəns/
, /ˈsɛmɪˌdɪf(ə)rəns//ˈsɛmɪˌdɪf(ə)rn̩s/U.S. /ˈsɛˌmaɪˌdɪf(ə)rəns/
, /ˈsɛˌmaɪˌdɪf(ə)rəns//ˈsɛmiˌdɪf(ə)rəns/ΘΚΠ
the world > relative properties > number > arithmetic or algebraic operations > [noun] > division > result of > remainder > after subtraction
differencec1392
resolvend1667
arithmetical ratio1718
semi-difference1766
1766 Philos. Trans. 1765 (Royal Soc.) 55 210 ACK is the semi-sum, and DAI the semi-difference of the angles CAI, CIA.
1873 Rep. Brit. Assoc. i. 23 The semi~sum and semidifference of the numbers to be multiplied.
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