Princeton's WordNet

1. zero, 0, nought, cipher, cypher(adj)

   a mathematical element that when added to another number yields the same number

2. zero, 0(adj)

   indicating the absence of any or all units under consideration

   "a zero score"

Wiktionary

1. 0(Noun)

   0.

2. 0(Noun)

   The origin, starting point, or fixed reference point, especially for a measurement.

   The 0 for the Celsius scale is 273.15 Kelvin.

3. 0(Noun)

   The off or low bit state.

   If the NOT gate input is 1, the output is 0.

• يُسْتَعْمَل مع الأفعال القِياسِيَّه لِبِناء الأسْتِفْهام والنَّفيArabic
• (not used in Portuguese - não é usado no português)Portuguese (BR)
• Hilfsverb in Fragen und bei VerneinungGerman
• εκδήλωσηGreek
• 0Spanish
• ollaFinnish
• (verbo usato per evitare la ripetizione del verbo immediatamente precedente)Italian
• 疑問・否定文とJapanese
• (의문문, ~) 합니까?Korean
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• Not: olumsuz ve soruda 'do' mastarı eklenir.Turkish
• 助動詞(和動詞一起構成問句和否定句)Chinese (Trad.)
• 助动词（和动词一起构成问句和否定句）Chinese (Simp.)