Abstract :
English vocabulary is the collection of words consist of nouns, verbs,
adjectives, adverbs, and prepositions that an individual knows. The researcher
choose English vocabulary as the activity of the student in this research because
English vocabulary is very important, without vocabulary exercise, there is no
speaking, listening comprehension, reading, and writing developments. This
research was aimed describing how is the process of using an online dictionary by
the student in English vocabulary learning at eleventh grade student of SMKS
Prama Artha Kab Simalungun. The method used in this research was descriptive
qualitative research which analyzed the data in the word form. The researcher
conducted in the eleventh grade student of SMKS Prama Artha Jaya Kab
Simalungun which consist of a student as informant, four student as supporting
informant, and a teacher as supporting informant. The data were obtained from
observastion, interview, and documentation. This study collected some important
information from the student about the learning English vocabulary process. In
this research, the researcher has been analyzed the data through theory by Miles
and Hubberman (1992: 20) about collecting the data, reducing the data, displaying
the data and drawing conclusion. In the learning process that has been done by the
student, there are several activities that has been done by the student such as
respecting the others, obidience, curiosity, ability measuring, learning assistent,
independent learning, respondibility, comprehensive understanding, and
motivation to memorize. As a learning assistant, an online dictionary was helpful
for the student in English vocabulary learning process. The used of an online
dictionary also help the student to increase her vocabulary mastery.