The kanji character 加 generally conveys the meaning of "to add," "to increase," "to join," or "to apply." It implies the action of augmenting something, contributing to something, or including something. It can also signify the act of applying something to a surface or situation.

・On-yomi (音読み): カ (ka) ・Kun-yomi (訓読み): くわ（える） (kuwa(eru)) - to add; くわ（わる） (kuwa(waru)) - to join; to be added to

⚫︎ 参加（さんか） Translation: Participation ⚫︎ 加える（くわえる） Translation: To add; to include ⚫︎ 加工（かこう） Translation: Processing; machining

The kanji 加 is a pictophonetic compound character. The left side is a radical called 力（ちから） (chikara), meaning "power" or "strength". The right side is 口（くち） (kuchi), meaning "mouth" or "opening." Originally, the character might have depicted adding something with strength, such as adding labor or material. Later, it developed to encompass the meanings of adding, joining, or increasing.