Adjective

(en adjective)

Describes a system which is connected (generally electrically) to a larger network.

# Describes a generator or power plant which is connected to the grid.

# Describes a computer which is connected to the Internet or to some other communications service – i.e., not simply with the cable plugged in, but has established a connection to a larger network (e.g., by dialing up).

Available over, or delivered from, the Internet.

* {{quote-magazine, title=No hiding place

, date=2013-05-25, volume=407, issue=8837, page=74, magazine=(The Economist) citation , passage=In America alone, people spent $170 billion on “direct marketing”—junk mail of both the physical and electronic varieties—last year. Yet of those who received unsolicited adverts through the post, only 3% bought anything as a result. If the bumf arrived electronically, the take-up rate was 0.1%. And for online adverts the “conversion” into sales was a minuscule 0.01%.}}

Connected to the Internet.

Available on a computer system, even if not networked.

Describes a system that is active, particularly building facilities (such as power) or a factory or power plant.

Adjective

(en adjective)

Having no validity, "null and void"

insignificant

* 1924 , Marcel Proust, Within a Budding Grove :

In proportion as we descend the social scale our snobbishness fastens on to mere nothings which are perhaps no more null than the distinctions observed by the aristocracy, but, being more obscure, more peculiar to the individual, take us more by surprise.

absent or non-existent

(mathematics) of the null set

(mathematics) of or comprising a value of precisely zero

(genetics, of a mutation) causing a complete loss of gene function, amorphic.