The term "ryo" has multiple meanings depending on its context.
1) In Japanese, "ryo" is a unit used for measuring mass and it translates to "kilogram." For example, you might hear someone say "That box weighs 50 ryo," meaning the box weighs approximately 50 kilograms.
2) In some martial arts styles such as Aikido or Judo, "ryo" refers to a specific type of throw or technique. For example, an "iriminage" is sometimes called "shihonage ryote dori," which means it's a variation of the original technique using two different methods (ryote dori).
3) In some video games such as Final Fantasy, "ryo" can be a character name or a term used in gameplay. For example, Rydia is a playable character in Final Fantasy IV and "Ryo's Judgment" is a special attack available to the player-character Ryu Hayabusa in Ninja Gaiden.
I hope this helps! Let me know if you have any further questions or need clarification on anything else.