Dic- is from dicere, to tell
Rupt- is from rumpere, to break
Port- is from portare, to carry
Loc- is from locare, to put or place
Yes, the Latin word "dic" does mean "to speak." It is the root of words like "dictate" and "dictionary."
To say is the English equivalent of the Latin root syllable 'dic-'. That syllable is the source for the Latin infinitive 'dicere', which means 'to say'. Both the Latin root and the Latin infinitive, by way of its older first person present indicative form 'deico', are related to the original Greek 'deiknymi'.
To say, to speak is the English equivalent of the root syllable 'dic-'. So the Latin derivative verb 'dicere' means 'to say'. The Latin derivative noun 'dictio' means 'an act of speaking'.
It's the singular imperative of "dico": "Speak!" or "Talk!" (to one person). Four verbs have irregular singular imperatives: dico, dicere dixi, dictum : dic fero, ferre, tuli, latum : fer ("Bring!") facio, facere, feci, factum : fac ("Do!" or "Make!") duco, ducere, duxi, ductum : duc (Lead!")
There are two Latin stems within the English language word 'jurisdiction'. One is the stem jur-, for 'law'. The other is the stem dic-, for 'saying'.
Dictere is a variant of Dicere which is the infinitive "to say." Dictere can mean said as in well said. In Latin it is more common to use the Dicere infinitve rather than Dictere.
Dic Jones was born in 1934.
Dic Jones died in 2009.
Dic Penderyn was born in 1808.
Dic Penderyn died in 1831.
Dic Goodman was born in 1920.
DIC Entertainment ended in 2008.