1. (noun) a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)

• atomic number 2
• helium

1. (noun) a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)

• argonon
• inert gas
• noble gas
• chemical element
• element

2. (noun) the 5th letter of the Hebrew alphabet

• alphabetic character
• letter
• letter of the alphabet

1. (noun) the 5th letter of the Hebrew alphabet

• hebraic alphabet
• hebrew alphabet
• hebrew script