一丝一毫

Traditional form:

一絲一毫

Pinyin (reading):

yīsīyīháo

Definitions:

• one thread, one hair (idiom); a tiny bit
• an iota

Characters:

• 一 - one; a, an; alone
• 丝 - silk, fine thread; wire; strings
• 一 - one; a, an; alone
• 毫 - fine hair; measure of length; one-thousandth

Traditional characters:

• 一 - one; a, an; alone
• 絲 - silk, fine thread; wire; strings
• 一 - one; a, an; alone
• 毫 - fine hair; measure of length; one-thousandth