Roronoa Zoro's 1080 Pound Phoenix, also known as "Senhachiju Pound Ho" in Japanese, is a long-range technique within his Santoryu arsenal in the One Piece series. It is also an improvement to his earlier technique, 108 Pound Phoenix, which would therefore suggest that Zoro is now tenfold stronger than when this first appeared. The name of this technique carries significant meaning and wordplay characteristic of Eiichiro Oda's creative naming conventions in One Piece.
The "pound" in the name of the technique is a play on misreading of the kanji for "earthly desires" (), which number 108 in Buddhist philosophy. This number is then multiplied by ten to create 1080 Pound Phoenix, implying a gigantic amplification of the power of the original technique. Besides, the "pound" element refers to the caliber of a cannon, again stressing the explosive magnitude of the attack.
When conducting the 1080 Pound Phoenix, Zoro creates a medium-to-long-range slash in a circular fashion that sends compressed blasts of air towards his target. This projectile nature of the attack thus provides Zoro the ability to fight enemies at longer ranges, increasing his combat range beyond close-range swordsmanship. Further, the fact that it had been referred to as a wind element attack in many One Piece media truly defines the technique as a ranged, airborne assault.
The 1080 Pound Phoenix was first revealed in the Dressrosa arc, used by Zoro in his fight against the enormous stone golem, Pica. The first time it was used truly depicted the real power it had, as it could deal a lot of damage to Pica's gigantic stone body. Zoro had grown enough during the time skip to be able to infuse the 1080 Pound Phoenix into such a formidable foe, and now he is ready to fight in the New World.
On the visual note, the 1080 Pound Phoenix has been shown in the anime to feature a huge, swirling wind slash with blue or green undertone coloring. This effects image further makes the technique very related to wind since it could cut through even the air. Again, what makes the 1080 Pound Phoenix one of Zoro's most iconic post-time skip techniques is its amazing visuals.
The conception of the 1080 Pound Phoenix follows a pattern of evolution from the original 36 Pound Phoenix through the 108 Pound Phoenix to, finally, the 1080 Pound Phoenix—showing Zoro's continued growth and mastery over his swordsmanship. One clearly distinguishes an overwhelmingly large gain in power and precision from the successive techniques, which speaks for Zoro's journey to become the world's greatest swordsman.
The 1080 Pound Phoenix has also been featured in the various One Piece video games, notably "Jump Force," where the game itself called this technique a close-range projectile attack that one could even use with their own created character. So, the ability to experience this technique has made the feeling of power more real, more tangible, and hence seals its place within the One Piece community.
In the broader aspect of Zoro's fighting style, 1080 Pound Phoenix serves as an important long-range counterpart to an otherwise primarily close-range arsenal. Its nature further enables Zoro to exercise his swordsmanship from a distance, hence he is a threat from both close and far, representing a new aspect added to his already extraordinary fighting ability.
The power scaling that the 1080 Pound Phoenix implies is huge in the context of the One Piece narrative. Techniques such as the 1080 Pound Phoenix become essential when Zoro and his companions face much more powerful enemies in the New World; with that level of battle, none of them can afford to be without such a power boost. In this case, the tenfold power increase from the 108 Pound Phoenix suggests that Zoro is capable of matching exponential growth in strength exhibited by top-tier fighters in the series.