QUICK ACCESS TABLE FOR COMBINING FORMS. (Definition to Combining Form) DEFINITION COMBINING FORM. abdomen abdomin/o. abdomen; front side ventr/o. abdominal wall lapar/o.
A KDA ratio, or Kills/Deaths/Assists ratio, is a measure to determine how much value each of your deaths have. For example, if you have a 3.0 KDA, you're effectively contributing 3 points per one death to your team. The higher your KDA the more you're contributing to your team as opposed to the other team.
Hence, if you go, say, 18/4/11 in a game, you have a KDA of: (18 + 11 = 29) / 4 = 7.25. Note that the above formula should not be confused for KDR, which doesn't count assists; a lot of people like that, but it's really a worse measure to use since it is biased against supports.