Similar to SI基本単位の再定義_(2019年)

2019 revision of the SI

The Open Source Definition

Definition of music

Extremism

The Free Software Definition

Definition of Free Cultural Works

United Nations General Assembly Resolution 3314 (XXIX)

Definitions and identity of indigenous peoples

Definitions of philosophy

Definition of terrorism

Definitions of fascism

International System of Units

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SI base unit

Kilogram

International Committee for Weights and Measures

International Bureau of Weights and Measures

General Conference on Weights and Measures

International Prototype Metre

Metric time

Type Ib and Ic supernovae

Type II supernova

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