bulb

US /bʌlb/
UK /bʌlb/
"bulb" picture
1.

bulbo

a rounded, swollen part of the stem of some plants, such as the onion or tulip, that stores food and from which a new plant grows

:
Plant the tulip bulb in the fall for spring blooms.
Pianta il bulbo di tulipano in autunno per fioriture primaverili.
Onions grow from bulbs.
Le cipolle crescono da bulbi.
2.

lampadina

a glass globe containing a filament that glows when electricity is passed through it, used for lighting

:
The light bulb in the lamp needs to be replaced.
La lampadina nella lampada deve essere sostituita.
He screwed the new bulb into the socket.
Ha avvitato la nuova lampadina nella presa.
3.

bulbo, sfera

a rounded part of a glass tube, such as the end of a thermometer or a pipette

:
The thermometer has a small bulb at its tip.
Il termometro ha un piccolo bulbo sulla punta.
The liquid is drawn into the pipette's bulb.
Il liquido viene aspirato nel bulbo della pipetta.