The character that contains the "also" radical is the Chinese character "也" (yě). The "also" radical, known as the "double dot" radical, is represented by two dots placed one above the other. This radical is used in characters that relate to the concept of "also" or "too," indicating addition or repetition. The character "也" is a prime example, as it means "also" or "too" in modern Chinese.

The "also" radical is one of the 214 basic radicals in the Chinese writing system. It is a component of many characters, often serving as a prefix or suffix. Characters with the "also" radical are typically associated with concepts of addition, repetition, or similarity. For instance, the character "再" (zài), meaning "again" or "once more," also contains the "also" radical.

According to the "Chinese Character Radicals" database, there are approximately 40 characters that contain the "also" radical. This makes it a relatively common radical in the Chinese writing system. The presence of the "also" radical in a character often suggests that the character has a meaning related to addition, repetition, or similarity.

The "also" radical is an essential part of the Chinese writing system, providing a visual cue to the meaning of characters that contain it. Its use in characters like "也" and "再" demonstrates the complexity and richness of the Chinese language, where a single radical can contribute to the meaning of multiple characters.