Correct

独体

/ dútǐ / 
Strokes

Definition

autonomous body/independent system

Example

As a Noun

lone structure; individual

1
Dútǐ
独体
biéshù
别墅

detached villa

As a Noun

single-element (Chinese character)

2
Dútǐ
独体
zì
字

single-element Chinese character