What does an apostrophe in dictionary pronunciation mean?

An apostrophe in dictionary pronunciation indicates a "stressed" syllable. The syllable before the apostrophe is pronounced with more emphasis than the others.

For example:

* 'con-duct (the stress is on the first syllable, "con")

* re'cord (the stress is on the second syllable, "cord")

* 'in-ter-est-ing (the stress is on the first syllable, "in")

However, not all dictionaries use the apostrophe for stress. Some use other symbols like a raised vertical line (`) or a heavy dot (·). It's always best to consult the specific dictionary's key to ensure accurate pronunciation.