also

Etymology

From Middle English also, alswo, alswa (also als(e), as, whence English as), from Old English eallswā (“just like, also”), from Proto-West Germanic *allswā, equivalent to all + so. Cognate with Scots alsa, alswa (“also, even so, in the same way, as, as well”), Saterland Frisian also (“accordingly, therefore, thus”), West Frisian alsa (“so, just so, even so, thus”), Old Saxon alsō (“similarly, as if, just as, when”), Dutch alzo (“so, thus”), German also (“so, thus”), Danish altså (“so”), Norwegian Bokmål altså (“so, therefore, accordingly, thus”), Norwegian Nynorsk altso (“so, accordingly, therefore, thus”), Swedish alltså (“so, therefore, accordingly, thus, then”). Doublet of as. More at all, so.

adv

1. (conjunctive, focus) In addition; besides; as well; further; too.
   Everyone had eggs for breakfast, but Alice also had toast.
   The subject of denoting is of very great importance, not only in logic and mathematics, but also in the theory of knowledge. 1905, Bertrand Russell, On Denoting
   Many genes with reproductive roles also have antibacterial and immune functions, which indicate that the threat of microbial attack on the sperm or egg may be a major influence on rapid evolution during reproduction. 2013 May-June, Katrina G. Claw, “Rapid Evolution in Eggs and Sperm”, in American Scientist, volume 101, number 3
2. (obsolete) To the same degree or extent; so, as.
   […] thereupon the queen's majesty […] did send a solemn ambassade of her privy-counsellors, whereof one was an ancient earl of the realm, the other also an ancient baron of the same, and others of the council of her state […] c. 1709, John Strype, Annals of the Reformation and Establishment of Religion