rh

Physiology.

1. Rh factor.

Symbol, Chemistry.

1. rhodium.

1. Meteorology. relative humidity.

1. right hand.

1. Royal Highness.

abbreviation for

1. right hand

the chemical symbol for

1. rhodium

abbreviation for

2. rhesus (esp in Rh factor)

abbreviation for

1. Royal Highness
2. (Republic of) Haiti (international car registration)

1. The symbol for rhodium.

Rh

1. A rare, silvery-white metallic element that is hard, durable, and resistant to acids. It is used as a permanent plating for jewelry and is added to platinum to make high-temperature alloys. Atomic number 45; atomic weight 102.905; melting point 1,966°C; boiling point 3,727°C; specific gravity 12.41; valence 2, 3, 4, 5, 6. See Periodic Table.