The element, a hypertext markup language (html) metadata element, contains a collection of metadata elements that describe the document or provide instructions to the browser.

head

Explanation:

The head element refers to a container used to hold metadata that is not displayed.The positioning of the element has to be in between the html tag and body tag.

Metadats is a machine-readable information pertaining to a document such as the title of the document, the author, page description, style sheets, keywords, scripts, and others. Therefore, the type of information held by the head element is majorly information that is meant for machine to process, not human readable information.

The feature of this metadata is that it will not be displayed on the page. However, the machine will be able to perceive and read it.

A head element is required in html and it meant to be used only once.

answer; i believe the answer you're looking for is (nanotechnology);