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defense    音标拼音: [dɪf'ɛns]
n. 防卫,防卫物

防卫,防卫物

defense
防卫

defense
n 1: (military) military action or resources protecting a
country against potential enemies; "they died in the
defense of Stalingrad"; "they were developed for the
defense program" [synonym: {defense}, {defence}, {defensive
measure}]
2: protection from harm; "sanitation is the best defense against
disease" [synonym: {defense}, {defence}]
3: (sports) the team that is trying to prevent the other team
from scoring; "his teams are always good on defense" [synonym:
{defense}, {defence}, {defending team}] [ant: {offence},
{offense}]
4: the justification for some act or belief; "he offered a
persuasive defense of the theory" [synonym: {defense}, {defence},
{vindication}]
5: (psychiatry) an unconscious process that tries to reduce the
anxiety associated with instinctive desires [synonym: {defense
mechanism}, {defense reaction}, {defence mechanism}, {defence
reaction}, {defense}, {defence}]
6: the federal department responsible for safeguarding national
security of the United States; created in 1947 [synonym:
{Department of Defense}, {Defense Department}, {United States
Department of Defense}, {Defense}, {DoD}]
7: the defendant and his legal advisors collectively; "the
defense called for a mistrial" [synonym: {defense}, {defence},
{defense team}, {defense lawyers}] [ant: {prosecution}]
8: the speech act of answering an attack on your assertions;
"his refutation of the charges was short and persuasive"; "in
defense he said the other man started it" [synonym: {refutation},
{defense}, {defence}]
9: an organization of defenders that provides resistance against
attack; "he joined the defense against invasion" [synonym:
{defense}, {defence}, {defense force}, {defence force}]
10: a structure used to defend against attack; "the artillery
battered down the defenses" [synonym: {defensive structure},
{defense}, {defence}]
11: a defendant's answer or plea denying the truth of the
charges against him; "he gave evidence for the defense"
[synonym: {defense}, {defence}, {denial}, {demurrer}] [ant:
{criminal prosecution}, {prosecution}]
12: the act of defending someone or something against attack or
injury; "a good boxer needs a good defense"; "defense
against hurricanes is an urgent problem" [synonym: {defense},
{defence}]

Defense \De*fense"\, Defence \De*fence"\, n. [F. d['e]fense, OF.
defense, fem., defens, masc., fr. L. defensa (cf. LL.
defensum), from defendere. See {Defend}, and cf. {Fence}.]
1. The act of defending, or the state of being defended;
protection, as from violence or danger.
[1913 Webster]

In cases of defense 't is best to weigh
The enemy more mighty than he seems. --Shak.
[1913 Webster]

2. That which defends or protects; anything employed to
oppose attack, ward off violence or danger, or maintain
security; a guard; a protection.
[1913 Webster]

War would arise in defense of the right. --Tennyson.
[1913 Webster]

God, the widow's champion and defense. --Shak.
[1913 Webster]

3. Protecting plea; vindication; justification.
[1913 Webster]

Men, brethren, and fathers, hear ye my defense.
--Acts xxii.
1.
[1913 Webster]

4. (Law) The defendant's answer or plea; an opposing or
denial of the truth or validity of the plaintiff's or
prosecutor's case; the method of proceeding adopted by the
defendant to protect himself against the plaintiff's
action.
[1913 Webster]

5. Act or skill in making defense; defensive plan or policy;
practice in self defense, as in fencing, boxing, etc.
[1913 Webster]

A man of great defense. --Spenser.
[1913 Webster]

By how much defense is better than no skill. --Shak.
[1913 Webster]

6. Prohibition; a prohibitory ordinance. [Obs.]
[1913 Webster]

Severe defenses . . . against wearing any linen
under a certain breadth. --Sir W.
Temple.
[1913 Webster]


Defense \De*fense"\, v. t.
To furnish with defenses; to fortify. [Obs.] [Written also
{defence}.]
[1913 Webster]

Better manned and more strongly defensed. --Hales.
[1913 Webster]

152 Moby Thesaurus words for "defense":
aegis, answer, apologetic, apologetics, apologia, apology,
arch dam, argument, argumentation, armament, armor, arms, backfire,
backstop, bamboo curtain, bank, bar, barrage, barrier,
bear-trap dam, beaver dam, bicker, bickering, boom, breakwater,
breastwork, brick wall, buffer, bulkhead, bulwark, casuistry,
cofferdam, comeback, confutation, contention, contraremonstrance,
controversy, counteraccusation, counterattack, counterblast,
counterblow, countercharge, counterclaim, counterfire,
counterinsurgency, countermeasure, counterreply, counterrevolution,
counterstatement, counterstep, counterstroke, cover, dam, demurrer,
denial, dike, disputation, dispute, ditch, earthwork, embankment,
exception, exculpation, excuse, explanation, eye, fastness, fence,
flyting, fort, fortress, gate, gravity dam, groin, guard, hassle,
hubbub, hydraulic-fill dam, iron curtain, jam, jetty,
justification, leaping weir, lee, levee, litigation, logjam,
logomachy, milldam, moat, mole, mound, munitions, objection,
paper war, parapet, passage of arms, plea, pleading, pleadings,
polemic, polemics, portcullis, preservation, protection,
protective custody, rampart, rationalization, rebuttal, rebutter,
refuge, refutation, rejoinder, replication, reply, response,
retort, return, rhubarb, riposte, roadblock, rock-fill dam,
safeguard, safekeeping, safety, seawall, security, set-to, shade,
shadow, shelter, shield, shutter dam, special demurrer,
special pleading, statement of defense, stone wall, stronghold,
surrebuttal, surrebutter, surrejoinder, verbal engagement, wall,
war of words, ward, watchful eye, weaponry, weapons, weir,
wicket dam, work, wrangling


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  • 2026 National Defense Strategy
    Rather than protect and advance Americans’ interests, they opened our borders, forgot the wisdom of the Monroe Doctrine, ceded influence in our hemisphere, and outsourced America’s industry, including the defense industrial base (DIB) upon which our forces rely They sent America’s brave sons and daughters to fight war after rudderless war to topple regimes and nation-build halfway
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    The Under Secretary of Defense for Personnel and Readiness (USD(P R)), in conjunction with the Director, CAPE and the Chairman of the Joint Chiefs of Staff (CJCS), will utilize the FY27 Program Budget Review (PBR) to resource and align the Joint C-sUAS University under the JIA TF 401 Director
  • FACT SHEET: Homeland Defense Policy Guidance (HDPG)
    The 2022 National Defense Strategy (NDS) states that the top priority of the Department of Defense (DoD) is to defend the homeland, paced to the growing multi-domain threat posed by the People's Republic of China (PRC) The 2023 Homeland Defense Policy Guidance (HDPG) aims to drive action across DoD to deter threats of aggression or strategic attack on the homeland across multiple domains and
  • Historical Office gt; DOD DOW History gt; Secretaries of Defense
    The Historical Office of the Office of the Secretary of Defense (OSD) dates to 1949 It is one of the longest serving continuously operating offices in the Office of the Secretary of Defense and has been recognized for the excellence of its publications and programs for over a half century The mission of the historical office is to collect, preserve, and present the history of the Office of
  • 2025 Annual Report to Congress: Military and Security Developments . . .
    China’s record of canceling defense and military engagements in response to perceived offenses or heightened tensions suggests that China views defense and military engagements as a tool to punish or reward the United States for its perceived behavior, instead of these engagements being inherently valuable to maintaining peace and stability
  • Artificial Intelligence Strategy for the Department of War
    Executing a set of "Pace-Setting Projects" (PSPs) that will demonstrate the accelerated pace of execution, focus, and ethos we need to stay ahead The PSPs will also serve as tangible, outcome-oriented vehicles for rapidly completing our buildout of the foundational AI enablers (infrastructure, data, models, policies, and talent) needed to accelerate AI integration across the entire Department
  • Transforming the Defense Innovation Ecosystem to Accelerate Warfighting . . .
    The Defense Advanced Research Projects Agency (DARPA) creates and prevents strategic surprise through technology innovation - demonstrating what is possible before adversaries know it exists The Chief Digital and Artificial Intelligence Office (CDAO) serves as a horizontal enabler for Al and data infrastructure across all three innovation
  • 57th Security Consultative Meeting Joint Communique
    November 14, 2025 The 57th Republic of Korea (ROK) - United States (U S ) Security Consultative Meeting (SCM) was held in Seoul, on November 4, 2025 ROK Minister of National Defense Ahn Gyu-Back and U S Secretary of War Pete B Hegseth led their respective delegations, which included senior defense and foreign affairs officials On November 3, 2025, ROK Chairman of the Joint Chiefs of Staff





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