Seminar dream meaning is explained below using 4 different sources. Each interpretation is shown with its source.

Interpretation 1 — James R. Lewis and Evelyn Dorothy Oliver

In a seminar, the dreamer could be the leader dispersing knowledge or the participant receiving information. Does the dreamer feel a need to teach or learn? In some esoteric groups it is said that during sleep the soul attends classes “on the inner planes” (in the spiritual realm), so dreams about being in a classroom could be interpreted as reflecting this type of “spiritual learning” experience. (See also Class, School).
Source: Dream Symbols in The Dream Encyclopedia Author: James R. Lewis and Evelyn Dorothy Oliver

Interpretation 2 — Dr. Mıchael Lennox

A seminar is a gathering designed to disseminate a particular piece of information or knowledge. In a dream, such a setting may indicate a moment in life when you are expanding your understanding of some aspect of your experience.

The type of seminar or the content of it can be helpful in your interpretation, if you know it.

Source: Complete Dictionary of Dreams Author: Dr. Mıchael Lennox

Interpretation 3 — Joan Seaman - Tom Philbin

1. Seeking to increase one’s knowledge.

2. Seeking to increase one’s intelligence.

Source: New American Dream Dictionary Author: Joan Seaman - Tom Philbin

Interpretation 4 — Stewart A. Swerdlow

A lot of things to learn at once.
Source: Expansions Dream Dictionary Author: Stewart A. Swerdlow