What is the meaning of Za-?

behind, off (out of the field of vision) (used with the preposition za)

turn aside into, get into

covering by carrying out another activity, cover over, block

activity carried out with pleasure (with reflexive si)

immerse in, full devotion to an activity

put away, lose, destroy

instead of, in place of

to begin (not a common usage)

saturation

forms adjectives referring to places

of; class 8 possessive concord.

of; class 10 possessive concord.

derives verbs of various meanings

Forms perfective verbs with the following meanings:

1. (no change in meaning)

   (no change in meaning)

   moving behind

   moving into

   to begin, to start (inchoative)

   in error, to a loss

   for a long time, too long

   to cover, to fill

   forms perfective verbs

   forms perfective verbs with an inchoative meaning

   of; class 8 possessive concord.

   of; class 10 possessive concord.

   forms perfective semelfactive verbs, usually indicating a thorough or irreversible action

   creates perfective verbs, especially ones formed with -ować

   indicates a temporary occurrence of something, sometimes marking a state as lasting some time or an inchoative aspect

   intensifies perfective verbs

   indicates covering or placing something inside something; over

   indicates crossing some acceptable boundaries of an action or increase of intensity; over

   indicates reaching some boundaries in space; up to

   indicates direction or point of origin; over

   Prefix prepended to adjectives to create an adjective denoting a finished action.

   verbal prefix denoting movement backwards, behind something, or to the other side

   verbal prefix denoting temporal sequence or an action following after another

   at, for (verbal prefix denoting the direction or targeting of an action toward a specific point)

   away, off (verbal prefix denoting directing an action away or driving something away)

   verbal prefix denoting penetration, reaching a certain place, or wandering into a location

   into (verbal prefix denoting an action that cuts into or affects only a part of an object's surface or interior)

   verbal prefix denoting an action that fully involves, covers, or overwhelms an object

   in, into (verbal prefix denoting insertion, embedding, or placing an object into something else)

   verbal prefix denoting wrapping, winding, entangling, or fastening an object

   verbal prefix denoting closing, blocking, covering, or filling up a space or opening

   shut (verbal prefix denoting a sudden or forceful closing movement)

   verbal prefix denoting the prevention, hindrance, or obstruction of an action or movement

   verbal prefix denoting the acquisition of a state, quality, or the causing of a specific condition

   verbal prefix denoting the sudden beginning or emergence of an action or state

   verbal prefix used as a delimitative, denoting an action performed for a short or limited time

   verbal prefix denoting a resultative action, or the full immersion/entry into a specific activity or state

   verbal prefix denoting a mitigated, intermittent, or complexly intensive form of an action

   verbal prefix serving as a pure perfective aspect marker without changing the base meaning

   verbal prefix used redundantly or adding little new meaning to the base verb

   verbal prefix used in lexicalized or idiomatic forms where the original meaning of the prefix is lost

   contraction of zi- +‎ -a-, literally “n class_(X) gnomic”

   of; class 8 possessive concord.

   of; class 10 possessive concord.

   of; class 8 possessive concord.

   of; class 10 possessive concord.

   Source: wiktionary.org