MU
mu
(noun) the 12th letter of the Greek alphabet
Source: WordNet® 3.1
Etymology 1
Noun
mu (countable and uncountable, plural mus)
The 12th letter of the Modern Greek alphabet.
Etymology 2
Interjection
mu
(Zen Buddhism) Neither yes nor no.
Noun
mu (uncountable)
(Zen Buddhism) Nothingness; nonexistence; the illusory nature of reality.
Usage notes
Used to answer a question that if answered with "yes" or "no" would imply something false.
Synonyms
• (nothingness): See also inexistence
Etymology 3
Noun
mu (plural mu)
A unit of surface area, currently equivalent to 666 and 2/3 meters squared.
Anagrams
• 'um, -um, UM, um, um-
Proper noun
MU
Abbreviation of North Maluku, a province of Indonesia.
Anagrams
• 'um, -um, UM, um, um-
Proper noun
Mu
A hypothetical continent that allegedly existed in the Atlantic or Pacific Ocean.
Noun
Mu (plural Mus)
ÎĽ (a mu particle)
Anagrams
• 'um, -um, UM, um, um-
Source: Wiktionary