noun Download 🔗Share A sequence of states representing an encoded message in a communication channel. Examples : "The flashing red light was a signal that the school cafeteria was out of pizza. " signal communication technology electronics essential Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share Any variation of a quantity or change in an entity over time that conveys information upon detection. Examples : "The flashing red light was a signal that the meeting was starting. " signal communication electronics technology physics essential Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share A sign made to give notice of some occurrence, command, or danger, or to indicate the start of a concerted action. Examples : "The flashing red light was a signal that the fire alarm had been triggered. " communication signal sign action technology military police essential Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share An on-off light, semaphore, or other device used to give an indication to another person. Examples : "The traffic signal turned red, indicating it was time to stop. " signal device communication technology electronics essential Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share (of a radio, TV, telephone, internet, etc.) An electromagnetic action, normally a voltage that is a function of time, that conveys the information of the radio or TV program or of communication with another party. Examples : "The radio signal was weak, making it difficult to hear the news report clearly. " technology electronics communication signal sound media internet physics technical computing essential Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share An action, change or process done to convey information and thus reduce uncertainty. Examples : "The flashing lights were a signal that the school bus was approaching. " signal communication technology electronics info science technical device system essential Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share A token; an indication; a foreshadowing; a sign. Examples : "The teacher's raised eyebrow was a signal that she wasn't happy with our answers. " signal sign communication technology electronics media essential Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share Useful information, as opposed to noise. Examples : "The teacher's clear instructions were a useful signal, helping the students understand the math problem. " signal technology communication electronics info essential Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share A simple interprocess communication used to notify a process or thread of an occurrence. Examples : "The teacher sent a signal that class was starting. " computing communication technology signal process system essential Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share A signalling interaction between cells Examples : "The hormone released by the mother's body was a crucial signal to the baby that it was time to be born. " biology physiology biochemistry essential Chat with AIVocabulary GamePractice Reading
verb Download 🔗Share To indicate; to convey or communicate by a signal. Examples : "The teacher signaled for everyone to be quiet. " communication technology signal action essential Chat with AIVocabulary GamePractice Reading
verb Download 🔗Share To communicate with (a person or system) by a signal. Examples : "Seeing the flames, he ran to the control room and signalled headquarters." communication technology system signal essential Chat with AIVocabulary GamePractice Reading
adjective Download 🔗Share Standing above others in rank, importance, or achievement. Examples : "a signal exploit; a signal service; a signal act of benevolence" achievement value quality position essential Chat with AIVocabulary GamePractice Reading