KungFuTaiChi: The Birth Place of Tai Chi in Your iPhone or iPad

martial art just doesn’t look right to me there, isn’t is supposed to be martial arts or THE tai chi martial art ? the others uses seem “iffy” as well here; maybe the write up was from the guys who did the app. Anyhow ….

maybe the author is right here; I am lousy at grammar but found this by cunamo on yahoo answers

The words “martial art” refers to ONE style or art,
but you just haven’t given the name. The words “martial arts” refers to
the world of martial training and practice, in other words ALL styles.

You cannot say “the martial art” in a general phrase, such as:

“The martial art is my hobby.”

As stated above “martial art” refers to a specific art. You can say:

“I practice the martial art of _____.” or:

“my hobby is my martial art.” (where, again, you just haven’t stated the name of the art yet, but there is a name)

Vice Versa, you cannot say “the martial arts” in a specific phrase like:

“I don’t like the kicks in the martial arts wushu kung fu”

The above is correctly spoken=> “…martial art wushu kung fu.”

Where it gets confusing is where we THINK we are referring to a
specific, like so: “I love the block and attack patterns of the martial
arts of wing chun.” ( <= correct) We think of wing chun as one style,
but there are actually several different styles or families of wing
chun, same for kung fu, tai chi, karate, etc.

This is similar to the word vegetable, in that we have many different
kinds of vegetables, but "vegetable" is a singular phrase referring to a
specific vegetable that is not named, and "vegetables" refers to either
all vegetables or many different kinds of vegetables.

Source(s):

15 yrs martial arts experience

English major in college seeking to become a High School/College English teacher