You searched for: “contact”
contact, contacts
The stage, or stages, of an eclipse, occutation, or transit when the edges of the apparent disks of astronomical bodies seem to touch.

At a solar eclipse, first contact is when the advancing edge of the sun first appears to touch the moon; the second contact is when the advancing edge of the sun seems to touch the other side of the moon, beginning totality; the third contact is when the trailing edge of the sun "touches" the trailing edge of the moon, ending totality; and the fourth contact marks the end of the eclipse.

This entry is located in the following unit: Astronomy and related astronomical terms (page 7)
Herodotus, The Fifth-Century B.C. Greek Traveler and Historian
(Herodotus extended his historical coverage beyond the Greek world to the lives, ways, and beliefs of the people with whom the Greeks and the Persians came into contact)
Latin and Greek Words Entering the English Language
(the first Latin words to find their way into the English language owe their adoption to the early contact between the Roman and the Germanic tribes on the European continent and Greek came with Latin and French while others were borrowed directly; especially, in the fields of science and technology)
Word Entries containing the term: “contact”
contact resistance
The resistance between metallic contacts and the semiconductor.
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 5)