If by "almost" you mean "over twice as big", sure. (I happen to have an HDMI connector sitting next to my MBP's Thunderbolt (nee Mini-DisplayPort) port.
Edit: They have "mini-HDMI" out, which is an entirely different beast than the mini-HDMI adapters included on many Android smartphones. A mini-HDMI port would require similar adapters to connect to anything useful.
A normal "type-A" HDMI port is a sizeable connector, larger than a USB port.
Several mobile phones have HDMI out. For me that is "small enough". I think HDMI would even make the ports on different sides more balanced, as the size is more similar to the magsafe adapter
Edit: They have "mini-HDMI" out, which is an entirely different beast than the mini-HDMI adapters included on many Android smartphones. A mini-HDMI port would require similar adapters to connect to anything useful.
A normal "type-A" HDMI port is a sizeable connector, larger than a USB port.