A trifunctional (meth)acrylate compound represented by the following general formula (I); and a polymerizable composition containing the compound. The compound preferably is a compound in which ring A1, ring A2, and ring A3 in general formula (I) each is a benzene ring or naphthalene ring and at least one of the ring A1, ring A2, and ring A3 is a naphthalene ring, or is a compound in which X1, X2, and X3 each is -COO- or -OCO-. More preferred is a compound in which ring A3 is a naphthalene ring. Even more preferred is the compound which by itself can retain a liquid-crystal phase at 30 DEG C and lower temperatures. (In the formula, M1, M2, and M3 each represents methyl, etc.; rings A1, A2, and A3 each represents a benzene ring, naphthalene ring, etc.; Z1, Z2, and Z3 each represents C1-6 alkyl, etc.; X1, X2, and X3 each represents -COO-, -OCO-, etc.; Y1 and Y2 each represents -L1-, and Y3 represents -L2-, etc. (L1 and L2 each represents C1-8 alkylene); a, b, and c indicate the number of substituents of the ring A1, ring A2, and ring A3, respectively, and when the number of six-membered rings contained in each substituted monocycle or fused ring is expressed by u, then the a, b, and c each independently is an integer of 2u+2 or smaller, provided that at least one of the a, b, and c is an integer of 1 or larger; p's each independently is an integer of 1-8; q and r each independently is an integer of 1-3; and s and t each independently is 0 or 1, provided that s+t>=1.