This is the 967th most frequent Spanish word.
marcó
"Marcó" is the third-person singular preterite form of "marcar," meaning "he/she/it marked" or "you (formal) marked."
In this sentence, 'marcó' refers to the action of using the phone to input a number in order to make a call, demonstrating its use in the context of communication technology.
Él marcó el número en el teléfono para llamar.
He dialed the number on the phone to call.
Here, 'marcó' is used to indicate creating an important or noticeable change or highlight in a competitive context.
Esa victoria marcó una diferencia significativa en el torneo.
That victory marked a significant difference in the tournament.
In this case, 'marcó' refers to highlighting, underlining, or distinguishing content for emphasis or later review, often in the context of study or learning.