Summon
Something an enemy calls up mid-fight, like a Kraken's tentacle or a Frost Warden. It dies the moment its summoner does and never counts toward clearing the fight, and a summoner will keep calling more, so put your damage into the one doing the calling.
In detail
A summon is called up during combat. Its death does not count toward clearing the fight, it drops no loot and records no stats, and an enemy that takes its summons with it on death clears all of them at once.
More in glossary
From the current development build. Content and balance may change before release. This public reference includes discoveries and does not reflect your personal unlocks.