второе слагаемое
1. приложение, дополнение (к книге, договору и т. п.)
2. тех. головка зуба зубчатого колеса
addenda (əˊdendə) pl от addendum
addendum (əˊdendəm) n (pl -da)
приложе́ние, дополне́ние (в книге), адде́нда
"It is better to know some of the questions than all of the answers." James Thurber
"This is the most joyful day that ever I saw in my pilgrimage on earth." Donald Cargill
"Life is but thought." Sara Teasdale
"It is difficult to say what is impossible, for the dream of yesterday is the hope of today and the reality of tomorrow." Robert H. Goddard