丸（まる、maru）
- circle

The Japanese word 丸 (まる) has several meanings, primarily related to the concepts of "circle," "round," or "complete." It can also signify "zero" or "nothing" in certain contexts. Additionally, 丸 can function as a suffix, often indicating completion, safeness, or belonging. It is a versatile word with a range of uses.

⚫︎ 丸い Translation: Round; circular ⚫︎ 全部丸ごと Translation: Whole; entirely ⚫︎ ゼロ丸 Translation: Zero (using 丸 to represent the number)

⚫︎ 丸 is used to describe things that are round or circular in shape. ⚫︎ It can express the concept of something being complete or whole. ⚫︎ It can indicate something is safe or secure, especially when used as a suffix on a ship's name, meaning safe. ⚫︎ It can also represent the number zero.

⚫︎ The word 丸 is most commonly written using the kanji 丸. ⚫︎ The hiragana reading is まる. ⚫︎ It can also be written in katakana as マル. ⚫︎ As a suffix, 丸is typically written in kanji, sometimes without any okurigana.

⚫︎ 円 (えん) - Circle, yen (currency). While 円 is also "circle," it's used for more formal or geometric contexts. ⚫︎ ラウンド - Round (loanword).

⚫︎ 角 (かく) - Angle, corner, square. ⚫︎ 四角 (しかく) - Square; rectangular

このテーブルは丸い形をしています。 ・Translation: This table has a round shape. ・Explanation: This sentence uses 丸い (round) to describe the shape of the table.

このリンゴを丸ごと食べました。 ・Translation: I ate this apple whole. ・Explanation: 丸ごと means "whole" or "entirely," showing that the apple was eaten completely.

The kanji 丸 originally depicted an object that was rolled, or circular. It evolved to represent the shape and the concept of wholeness. The suffix usage, such as in ship names (e.g., 安全丸 - Safe Maru, meaning "safe ship"), likely derived from the concept of completeness and security. The use of 丸 to signify "zero" or "nothing" came later, representing the absence of anything.