The current date era beginning approximately 2000 years ago in the Gregorian calendar, based on the (assumed) birth of Jesus Christ.

(baseball) The period after about 1919, following the dead-ball era.

(baseball) The period between around 1900 and 1919, characterized by low scoring games with few home runs.

(historical) The time period between 1611 and 1721 when the Swedish Empire thrived in Europe.

plural of geologic era

plural of classical era

(pharmacology) Initialism of estrogen receptor agonist/antagonists.

plural of ERAA

plural of erabutoxin

(biochemistry) Any of a class of neurotoxic proteins found in venom of the sea snake of the genus Laticauda