Similar words
optisch
Sichtbar is the general word for visible; optisch is more technical, relating to vision/optics specifically.
Similar in other languages
Spanish
visible
visible is the Spanish word for the same thing — both mean "visible."
Portuguese
visível
visível is the Portuguese word for the same thing — both mean "visible."
Practice
1 What does sichtbar mean?
visible
2 Fill the gap: Der Turm war von weitem ___.
Full sentence: Der Turm war von weitem sichtbar. (The tower was visible from afar.)
3 Which fingerprint chart matches sichtbar?
sichtbar: neutral register, common frequency, general domain, neutral connotation.