Question: Is the Angel Moroni a Resurrected Being?
Answer: Yes, he is. The term angel has a few different definitions. The Guide to the Scriptures at LDS.org states:
"There are two kinds of beings in heaven who are called angels: those who are spirits and those who have bodies of flesh and bone. Angels who are spirits have not yet obtained a body of flesh and bone, or they are spirits who have once had a mortal body and are awaiting resurrection. Angels who have bodies of flesh and bone have either been resurrected from the dead or translated."
In the Bible Dictionary the definition of "angel" teaches, "We learn from latter-day revelation that there are two classes of heavenly beings who minister for the Lord: those who are spirits and those who have bodies of flesh and bone. Spirits are those beings who either have not yet obtained a body of flesh and bone (unembodied), or who have once had a mortal body and have died, and are awaiting the resurrection (disembodied). Ordinarily the word angel means those ministering persons who have a body of flesh and bone, being either resurrected from the dead (reembodied), or else translated, as were Enoch, Elijah, etc."
Another part of the same definition states, "The word angel is used in various ways. A person who is a divine messenger is called an angel. Thus Moroni, John the Baptist, Peter, James, John, Moses, Elijah, and Elias all ministered to Joseph Smith as angels. These all shall be exalted and inherit celestial glory. The scriptures also speak of another class of persons who, because of failure to obey the gospel, will not be exalted and will become angels in eternity.... This latter designation should not be confused with the use of the term angels having reference to the heavenly messengers sent forth to minister to the inhabitants of the earth." Thus when the term angel is used it usually means the person is a resurrect being, such as the Angel Moroni.
"There are two kinds of beings in heaven who are called angels: those who are spirits and those who have bodies of flesh and bone. Angels who are spirits have not yet obtained a body of flesh and bone, or they are spirits who have once had a mortal body and are awaiting resurrection. Angels who have bodies of flesh and bone have either been resurrected from the dead or translated."
In the Bible Dictionary the definition of "angel" teaches, "We learn from latter-day revelation that there are two classes of heavenly beings who minister for the Lord: those who are spirits and those who have bodies of flesh and bone. Spirits are those beings who either have not yet obtained a body of flesh and bone (unembodied), or who have once had a mortal body and have died, and are awaiting the resurrection (disembodied). Ordinarily the word angel means those ministering persons who have a body of flesh and bone, being either resurrected from the dead (reembodied), or else translated, as were Enoch, Elijah, etc."
Another part of the same definition states, "The word angel is used in various ways. A person who is a divine messenger is called an angel. Thus Moroni, John the Baptist, Peter, James, John, Moses, Elijah, and Elias all ministered to Joseph Smith as angels. These all shall be exalted and inherit celestial glory. The scriptures also speak of another class of persons who, because of failure to obey the gospel, will not be exalted and will become angels in eternity.... This latter designation should not be confused with the use of the term angels having reference to the heavenly messengers sent forth to minister to the inhabitants of the earth." Thus when the term angel is used it usually means the person is a resurrect being, such as the Angel Moroni.