Alternative form of Forty-five

plural of 4B

present participle of 404

plural of 404

Third-person singular simple present indicative form of 404

(UK) Solitary confinement imposed to protect a vulnerable prisoner from other inmates.

(molecular biology) The small subunit of the eukaryotic 80S ribosomes.

(US) George Walker Bush, the 43rd president of the United States, distinguished from his father the 41st president.

(US) George Herbert Walker Bush, the 41st president of the United States, distinguished from his son the 43rd president.

(pharmacology) An opioid analgesic drug developed in the 1970s and having around 7.5 times the potency of morphine, also used for recreational purposes.